@DevonDiver
I actually spoke to NAUI last week. They are in the process of unveiling a recreational SM course as a specialty in the Advanced class. However, they will give the option to instructors that if they wanted to teach SM in open water they would be able to. I also found something else to be interesting, as it stands right now, the standards do not prohibit the use of SM gear in OW classes and they actually do not really prohibit the use of any gear in the OW class. Obviously there are a few exceptions, but thats common sense to any scuba professional.
As to what you mentioned about the C-Card dilemma, I agree with you that there should be stipulations put into place. However, this is not to be cute or anything, most of the most prominent dive locales around the world, dont really care about C-Cards and keeping to those restrictions, i.e. deep diving w/o that specialty, drift diving w/o experience. You get my drift. So what is going to stop an OW diver from "trying out" SM somewhere on vacation. Its kinda the same thing in my mind. We just need to make clear to students that you need to stay within personal limits even if that means you cant do the "cool" dives until you have the training. BTW, you can purchase any scuba equipment online nowadays anyways, what is going to stop someone from buying the gear and self train. It all comes back to what we instill in our students after that if they want to make stupid decisions well, get used to it cause there is plenty of stupidity in the world today, thats for sure.