A BP/W is more complex because of its modular nature. You actually have to design the one right for your set up and know what everything is; even more so if you're talking an actual SS plate and STA because now you're at a point where you may not need any lead at all. Let's face it, new scuba students should have the ability to quickly ditch lead (or more probably have someone else ditch lead) to get positive. I've seen a new diver have a problem with more wing then she should have had, it tacoed and she could not get the air bubble under a dump valve. She also could not figure out how to put air in the wing at depth, which says a lot.
I think there is a lack of precision in this thread between an actual tech style BPW set up and a unitary wings style BC.
A "real" BC is more idiot proof. All you need to do is plug in one hose and two arms.
Well said! A jacket is a jacket. With all that is going on in an OW class- task loading, motor skills, learning curves etc assembling an appropriate BP/W would be just one more thing. After a student has completed the OW dives and familiar with the skills, as well as just being under water, then adding a new learning curve is not as daunting. As has been said many times- experience, experience and more experience!