Regarding your post on GUE/UTD Rec certs, and their experience entering the real world:
I have taught several "higher level" OW certification classes. In these the students were essentially taught from the ground up with Fundies level skill requirements, using a long hose, min deco, gas planning, and team awareness. As you can imagine, this class runs longer that a "conventional" class - a bit more than twice as long.
At the end of the class, they are placed in the pool for a session with conventional BC's and octos, as well as with BC's and regs configured with an Air2. Amazingly they all seem to handle the "conventional" gear and procedures just fine, and actually make them look good.
Also, having seen these students (well after graduation) in a resort diving environment, they have universally been the most holistic, nonjudgemental divers I've seen. They just handle the situation, and dive safely with what's around them. Makes me proud.
I should point out that I am not a GUE or UTD instructor, and these classes started long ago, before there even was a GUE Rec1 or whatever class.