I've been thinking about getting one of these as a CCW. My question is this. If I were to go with the glock 27, I would get a Pierce extender on one of the magazines, because it's too uncomfortable for me otherwise. However, by doing this, I'm not sure if you gain much by going with the 27 over the 23, except for maybe a shorter overall length by a little. My question is this: if anyone has carried both of these before, is there still an advantage in going with the 27 over the 23 if you get the extender for ccw?