Watch the first 10 minutes of DIR 3 on you tube. See what George says at 3:05 and again at 4:20
[video=youtube;TD4K0SzZijI]http://www.youtube.com/watch?v=TD4K0SzZijI[/video]
I watched it, they have both good and in my opinion bad points. I also have a larger opinion on what DIR diving means to me, being a novice.
The good being as follows
-Self reliance is life
-Teams are important and you should be able to assist in any issue safely and competently
-Buying gear for function over flash just makes sense
-You should train a system that allows you to frequently use and build on the same skills and equipment, no matter what you dive
The bad being (I feel)
-There is imminent danger you face if you start to confuse baseline variation or tools and replace them with gimmicks
To say comfort and safety go hand in hand and force someone to not use something they're comfortable or familiar with is counter-intuitive if it doesn't jeopardize safety. Bottom line being you and your buddy, assuming you're being honest and true team divers should be familiar with each others rigs and their functions for emergencies, doesn't matter what you wear (though less is more here, I understand). The honesty should also come from an objective ability to tell your buddy that what they're bringing is inappropriate and them being able to judge through your reasoning the importance of your buddies preference. The other side being, it doesn't matter what gear you want to buy, if your BCD has a strobe light and a hot dog maker built in, you should be pre-checking for positive history/ reviews through other customers and quality. The extra features should also not interfere with the safety or function of the device either.
-DIR divers sound like they are relatively one of the more caring groups of divers out there, frankly speaking- anyone trying to save lives fits this category. Their focus in the end is safe diving and enjoying the sport. However, as with the philosophy a few (not all) also seem to obnoxiously advocate the agency or the principles hence why DIR was changed to GUE if I understand right, because people would frequently call on others for "doing it wrong" which honestly, if you're all having fun and getting back to the surface safely not putting each other in danger, that's what it's about. Nothing "wrong" there. The only issue I have here, as in the video is "tact" on how the opinions are presented.
I think my true issue with the DIR philosophy vs. other divers fight (both parties included in this) is no one wants to seem to recognize the others points. Everyone always has a larger boot to shove up the others backside in the interest of preference or safety or whatever topic you want to argue under. It seems few sit on the fence and honestly say that DIR principles aren't the worst, as neither are their people and even if that style of diving isn't for them they still take positives from it that will encourage their own safe diving. Just reminds me of the childish windows vs mac debates that plagues the tech industries. I've met a few good divers (there's tons but I'm not gonna PM all of you

) here who dive under GUE or other and all they want to do is share their positive safe experiences in the hope that it will rub off on others, I've also seen people on both sides who angrily fight for whatever cause they believe in because it works for them as well.
Sorry for the thread jack, back on topic-
As far as cave diving goes it can be an incredibly risky thing so I can understand trying to prevent death, I must admit if what the shop owner said was verbatim without any information given it is a bit insulting, but I side with others here that for every responsible diver she receives, she probably gets a much higher percentage of idiots who she's walling off from Darwins reach. I don't think anyone wants to dive for cadavers, even if it's their job. A different tact may be needed, and maybe a test to evaluate experience or intentions for refills objectively rather than just blocking off people who are scoping out the area for other activities rather than its popular reason. Honestly speaking, cert cards should be enough and a bit of honesty on the divers part, but people just aren't that trustworthy. As far as others telling you to cave dive, just say it's not in your interests, that should be enough. Unless you're talking to seagulls who will sit on your shoulder and squawk I don't think you need to go into in-depth reasons as to why. If someone can't respect that it's not in your interest and out of your comfort level, then don't dive with them and ignore them. Pretty simple if you ask me. I can see the passion of trying to get others interested in training and the act though because anything I become interested in I would love others to join me in, so if it's fun to me- maybe it would be worth someone else's time. Mind you I'm not pushy but the offer is always extended.