The OP didn't specify that this was for SD only or not for SD at all, I don't think... Just because you want to buy a nice high-end sports car doesn't mean you are going to commute to work with it. But, it doesn't mean you would drive it to work on a nice day either.
We're kinda taking this thread off topic, but I agree with Woofers. I like the idea of selecting the platform that I am most familiar with for SD.
For the concealed carry issue, I went around and around with myself on this one, since personally, I am most familiar with the 1911 platform. It just fits my hand, and feels best to me. And, I can hit what I want, when I want, very reliably. To me, that's critical for a carry gun. The biggest drawback to the 1911 for a carry gun, is it's size. It's on the big size. Sure, it's not a Desert Eagle but it's no Derringer either. For a Double action compact carry gun, I sure like that M&P compact line. The grip angle seems to feel like the 1911 to me anyway. I respect Glocks, but when I bring them up naturally, I'm always high, and have to correct. I don't like how they feel in my hand. Not so with the 1911, or the M&P. But, I don't know why it took me so long to think of it, but I've decided to look for a Commander size 1911 for my concealed carry. Duh! So, personally, that's on my short list to pick up.
So, to sum it up, I agree with what Woofers wrote about platform familiarity for a SD gun. And yes, while it would suck to have a fancy gun temporarily confiscated pending any investigation for a SD shooting, the main point has been brought up, that at least you're alive for it to be confiscated from you!
PE