I also don't feel that my thoughts on the matter are represented in the poll, so I did not vote.
As a matter of disclosure, I have gone though DIR-F, but have a provisional status at this point. I understand everything that was taught, but need to further develop the actual skills.
I'll speak from a philosophical point of view, since I currently only do recreational dives.
A dive's level of complexity will determine who I will dive with whether it's someone who has gone through DIR training or not.
At the least complex end of the scale, I would dive with anyone who does not display an unsafe attitude. If I feel that someone's attitude is one that could put me or themselves in danger, I won't do the dive. This is what I was taught in the '70s, so I've felt this way long before I ever heard of DIR.
As the level of complexity increases and requires more skill or experience, I will exercise a higher degree of discernment when it comes to choosing who I want on my team.
On the more recreational end of the scale, having a DIR team mate has more to do with diving enjoyment than safety, in my opinion. Diving with people who use the same procedures that I use make it a more enjoyable dive. I think it's more about compatability of diving styles, at this point.
For instance, I don't like to race around the ocean bottom looking for things. I have no problem with people who like to do this, but you won't see me teaming up with these people very often because our diving styles are incompatible. I like to move slowly and really take everything in.
As we move to the technical end of the scale, I believe procedure becomes increasingly important to safety. I think this is true whether you dive DIR or not. I have personally chosen to follow DIR procedure, so if I'm going to undertake a dive 350 feet deep and over 3.5 miles into a cave, I won't be diving with someone who is not 100% DIR when it comes to procedure.
Just to be clear and try to keep from being misunderstood, if I had chosen some other system of diving, I would not do a dive requiring a high degree of skill and experience unless someone was adhering to that system 100%. Compatability when doing dives with a high level of complexity becomes a safety issue of life and death importance. I'm not saying that I think everyone has to be DIR to do a dive at the top level of complexity. I am saying that if someone is going to undertake that kind of a dive they should be 100% compatible when it comes to how they handle things when something goes wrong.
By the way, I would not do a dive requiring a high level of skill and experience with someone just because they hold a GUE cert that says they are qualified at a certain level. I would start training with them at a recreational level and increase the level of difficulty over a period of time to develop our sense of being a team. At some point, DIR or not, we may reach the conclusion that we are not a tight enough team to go beyond a certain level of complexity together. That's not a commentary on anyone's dive ability. We could both have excellent skills and might both acheive that level of tightness with other team members. It gets back to compatability. It's something that you only learn about each other through diving as a team together over a period of time.
That's my take on the subject with the knowledge and understanding that I currently have. As I learn more and understand more, what I believe may change to some degree.
Christian