I guess in the back of my mind I am a bit of caliber snob.
Though I dont feel under gunned with a 9mm Im not sure I would want one that only carried say 8 rounds of hp while im comfortable with 8 rounds of 45 hp.
I wouldnt be with 5 rounds of 45 hp but totally comfortable with 5 rounds of 357 125 hp. Really doesnt make sense I dont guess but it is what it is.
My ED carry is a 45 at the present though. 8 plus 1