Ever since the Hallandale (sp?) incident where the FBI shot it out with two heavily armed bank robbers, I have been a bit shy about the 9mm. Now all calibers have their failures to stop, except the 155mm howitzer.
When they make a decent IWB holster for the 155, I'm there :lol:
To be fair, the 9mm has stopped it's share of fights. I am not volunteering to stand in front of one anytime soon. I read one knowledgeable scribe who said the .38, .45 and 9mm were not that different with ball ammo. all about 50% stoppers in some tabulation from shootout data.
For me I would want a whole bunch of rounds. The GLock 19 would be my first choice. If I had to carry in many different modes, was not sure I could always use a holster or fanny pack, perhaps a Browning High power - a bit big but fairly slim. The Israelis have had success with these. They carry with an empty chamber and practice racking on presentation. They get stuck in waistbands, pockets, purses, you name it. Of course you could do the same with a GLock if you had to. It's just that GLocks chambered should always be carried in a proper holster. I find the HP a bit easier to rack during the presentation.
Have known a couple of battle tested types (one marine and one cop) who both like the little single stack SIG. Nothing wrong with it, I just like to carry a half box or so of ammo with the 9mm.
For me, the price, capacity, and reputation of the GLock 19 would sway me that direction for a carry 9mm.