Here in kalifornia we need a permit to carry a concealed handgun. My jurisdiction normally only allows one handgun to be chosen. I had to petition the Sheriff to get a second pistol added to my permit. My reasoning was that I train with my carry pistol, and that I wanted a second of the same type as a backup just in case my primary failed for some reason. That was the only reason my request was approved.
Both my pistols are full size 1911 .45 Government Models. It is always funny when I go in for my yearly range qualifications. My sidearms always draw extra attention and approval of the instructor when presented among the other permit holder's compact semi autos and J-frame sized revolvers. Civilian carry of a full size pistol must really be a rarity in our county. I've just always figured that if I needed a gun for personal protection, it should be as effective as possible in that application.
In the world we live today where the fight is most likely against other well armed men, a few more rounds and the ability for a fast reload has proven itself to be an issue. As much as I like my revolvers, the 1911 makes more sense for "social work" these days.