The Browning Hi-Power is one under-estimated, overlooked, and forgotten pistol - in 9mm. Its slim profile makes it carry so well, and has what I consider just the right size grip for a double column magazine. Its a pity so many shooters don't even consider it when they're looking for a good defensive firearm; hell a good number of folks have never even heard of one.
I like the 9mm, it certainly has it place. I've got a Colt LW Commander chambered in 9x23, and have a 9mm barrel fitted for practice. I'd have no reservations carrying it loaded with 9mm if I was unable to acquire 9x23 or 38 Super ammo.