What happened to CCW classes explaining, well, the legalities, methods, and concerns with, well, concealed carry? I've heard all sorts of things (the anything that doesn't start with a 4 is worthless crap). Problem is, then you have people who don't know any better ending up with a weapon they can barely hold, let alone put consistent shots on target. Yes, I keep my usp45 under the bed, but I got my GF an xd9...why? It's fits her hands, she is dead nuts accurate with it, and with good ammo, her aimed shot with follow ups will be better than one "maybe" with a 40/45. (I also keep the usp9 close at hand as well, why? I'm more accurate with it than with the 45...). Being comfortable and well trained will top a larger bullet any day of the week.
Ironically, the best CCW/SD class I've been in was in MA! It went through all the details of the important aspects of both, required both revolvers and semi auto pistols to be fired with accuracy requirements, and in my opinion, coached all the participants with proper firearm choice (which I could find no fault with)...weird, considering how strict the CCW requirements are there (including the need to have a CCW JUST to OWN a "large capacity handgun")