I think DIR (the attitude) is not applicable to my diving style.
However, DIR (the diving style) is applicable (although not a requirement) to all forms of diving. That means the use of BP/wings, long hose, being trained/prepared for bad things to occur (OOA, hose blowouts, regs getting messed up, etc...).
That is IMO *primarily* what GUE teaches, at least in DIR-F. I can't speak to Tech-1 or Cave-1, although according to my instructors, if you can master what is taught in DIR-F, Tech-1 and Cave-1 are fairly easy.
Some quick background. Last Fall, my wife and I drove 550+ miles (each way) from Montana to Seattle to take the DIR-F course taught by 5th Dimension in Seattle over a 3-day weekend. We didn't complete the course because my wife got too cold in the water of Puget sound and we were unable to complete our dives. It was a very tiring and expensive weekend, and knowing what I know now, I would do it over again. With that in mind, I consider my experience to be a representative sample of what DIR/GUE have to offer.
If I had to summarize what I was taught in DIR-F it's:
* Buoyancy/trim is your #1 concern while diving (it may be automatic for some, but it wasn't for anyone in my class).
One must have proper trim at *ALL* times (including during emergencies)
* By prepared for bad things to occur (OAA)
* Equipment can make a difference in your ability to deal with the above two issues.
* There are multiple ways to kick underwater, and some are better suited to silty environments
* Nitrogen is bad (Aka deep-air)
* Oxygen isn't much better, but is a necessary evil
* Helium is bad, but is better than anything else we have currently available (vs. Nitrogen && Oxygen)
Just to set the record straight, my wife and I learned a *TON* of information in my DIR-F course. In particular, my wife was especially convinced that deep-air was something to be avoided, which did not bother her previously. It was by far the best course I've taken since my OW course (and I've taken 4 additional courses after certification). The instructors challenged (humiliated?) me, and caused me to re-assess a number of beliefs I had learned during my initial OW classes that I believed to be absolute truth.
What I didn't like was:
* The *BLATENT* Halcyon marketing. This is obvious in both the DIR-F book as well as the class.
* The underlying attitude of the instructors. It seemed that the intent was to humiliate you, not to point out weaknesses. As the weekend progressed, it became obvious that there was no way to make the instructor(s) happy. More on both of these later.
Also, during the course, two of the members in the class mentioned that they've been diving with 36% Nitrox for a while now. The instructors chastized them for not using 'standard' mixes. When asked why 32% Nitrox (the DIR standard) was better than 36%, the answer was O2 toxicity (95' has PP02 of 1.4). However, the divers pointed out that the bottom of the sound where they are diving is around 80', so it's a non-issue. Finally after discussing among themselves, the answer given was "you wouldn't be able to dive with the DIR folks, since you'd be using non-standard equipment". The sad thing, is that the *reason* for using 32% Nitrox wasn't know to the instructors.
I spent months doing my own research as to why this particular mix was 'magical', and finally heard a talk given my George in Europe where he discussed the fact that there wasn't anything special about 32% Nitrogen, except that it was chosen at some point to *BE* the standard. However, no-one knows why this is, but if George says it, it must be 'Right'.
This kind of attitude (if George says it's true, it must be true) is why DIR in it's truest form is something I do not want to be associated with. Give me a *reason* for doing something that I can hang on my hood. I'm an intelligent person, let me make my own choices as to what is 'Right' and what is wrong. You're way *might* be better, but unless you inform me, I won't be a better diver just by emulating you unless I know *what* to emulate. (Aka, just because I wear a BP/Wings and use a long-hose, I therefore must be considered a DIR diver.)
Others have pointed out that there are nutcases in every group you join, and I'd have to agree with them. However, I'd also make the general statement that DIR tends to draw the kind of people toward it that are a reflection of it's leadership. And, the most public leader of the DIR movement is George, like it or not. Yes, JJ is his alter-ego and is easier to get along with, but he is not nearly the force that George is in DIR. (One can say that JJ is the one making money off George's idea, and as such is much more senstive to the public perception of DIR.)
Because of George's personality, it is my opinion (based on mailing list discussions, Internet chat rooms, BBS experience, descriptions of others who have taken GUE classes, and my own experience) that the DIR movement (and GUE) tends to get a larger share of zealots/obnoxious people than most other organizations. The DIR way is to put-down anything it doesn't like, rather than lift up it's ways as being better. (Deep-Air is bad, Bungied Wings are Bad, OMS is bad, PADI is bad, the dive industry is bad, if you disagree with me you're as dumb as a farm animal, I'm smarter than you, I know more than you, you are stupid, etc..)
Case in point is Uncle Pug and Lost Yooper. How many of the folks on this board were *pleasantly* suprised (shocked perhaps?) to find two such fine individuals who are DIR advocates, but who do not resort to name-calling and put-downs to get their point across? I know I was, and I appreciate both of them immensely for their wisdom. If the public leadership of the DIR movement were more like these two, then DIR would be *more* acceptable to folks.
I guess to summarize I feel that the DIR 'system' has alot of good points, but because of it's unflexibility (primarily due to the inflexibility of it's leader) to extend and embrace new ideas, it will continue to cause a rift and not allow it's many of it's good ideas to be considered by the general dive community.
Fortunately, with it gaining wider notoriety/exposure, there are people like UP and LY who are trying to show by positive example why it's a better system.