The gear I have my students use… beyond their own personal mask, fins, snorkel and if they have one a wet suit is as follows:
Scubapro mk2 regulator and r190 2ed stages. The primary has a yellow faceplate and is fitted on a 5ft hose while the reserve is bungeed under the chin. Students also use halcyon ss backplates and wings. For gauges students use the uwatech depth gauge and compass worn as wrist mounts.
We spend practice time before going into the water doing modified s drills and re-rigging the long hose after deployment. It typically takes students 20 repetitions or so until they get it automatically. Clipping and unclipping the spg, well that does take a fair bit of practice to hit the d-ring.
Most assuredly the student know which reg they are using.
What I am trying to accomplish with my students is to develop in them a strong sense of buoyancy and trim as the foundation of safe and happy diving. We do talk about situational awareness and the importance of the team (buddy skills) in diving safely. I am also preparing recreational divers to dive within the limits of their training environment, which means 60 feet in clear and warm waters. Cold water, dark water, deep water, rough water is another matter.
Students come away from class with the motor skills trained repeatedly to take care of themselves and a buddy underwater. Now this is within the framework of a four-dive o/w course. I don’t expect students to dive like a GUE instructor. What I do expect is that they can clear their mask, recover their reg, ascend and decend slowly and horizontally, perform ooa shares smoothly and efficiently without loosing control of buoyancy, well within 5 feet or so. These skills and the other required skills of diving can be mastered in the conventional 4 dive course.
New divers do not need a GUE style o/w course (whenever it appears) to dive safely in benign conditions. What they do need are solid buoyancy and trim and the confidence that comes from repletion of skills under training. I believe that a much higher standard of training can be afforded students within the parameters of major agency standards. Students can be taught to dive as divers actually dive. It takes a real commitment by instructors to reduce ratios and to think about training to the standards as divers dive.