VA, you are the one talking about theories. I'm speaking from experience here.
This is what I've decided I'm going to do and why when comes to carrying a gun for serious bussiness. You can call it BS if you wish, but you only miss the point. And that is, if I'm going to carry, I'm carrying something that will give me an edge. Mouse guns don't do that nearly as well as a full size gun.
Now, if it comes down to being too much of a bother to carry a full size gun, what it really comes down to is wether you are willing to pack the size and weight. I am and you are not.
Good luck with that. E