I have been carrying concealed in hot climates for several years. My fav CCW gun, and the one I have on my hip as I type, is my GLOCK 30.
I tried the 1911 thing, and damn that pistol is big and HEAVY, especially for a measely 8 rounds of .45. I got a backache trying to wear it around 24/7. And it rusts. And the doohickies sticking out of it jab my skin. I wonder if some of these people that claim to carry, really do...every day, all day.
The Glock 30 at first appears thicker than a 1911, but if you include the safety and levers and such on the 1911 which must be covered by a holster (adding more thickness), and the often thick grips on a 1911, then the G30 is really no thicker in my experience.
I carry G30, literally, under a cotton tank top or a white T-Shirt and nylon shorts in 110* weather. You can't get more concealable than that.
I have a gun on me just about 24/7 for several years now, and the G30 is a dream to carry and more so a dream to shoot. I even have the ability to carry it in my underwear or anywhere else. I could not accomplish that with the heavy 1911, unless I wore a belt and holster with my boxer shorts around the house.
My G30 holds 11 rounds, is smooth all over, rust proof, RELIABLE, has lower recoil than any other .45 I have ever shot, (including full sized 1911's), is more accurate than any .45 I have ever shot, including my full sized custom 1911's.
I could not possibly give higher accolades than to the Glock 30.
If you want something REALLY small, then the Glock 27 should fit the bill, or the new Steyr S40. But, I am not nearly as accurate with those guns.
I fully agree that thickness matters and barrel length matters less. I have a Glock 22 that has the handle cut down to compact size, and it conceals EXTREMELY easily for a full length gun.
Not meaning to diss on anyone else's choice (1911)...just different strokes for different folks I guess. But, I have given it a fair shake several times, and it ain't for me.
Anyway, didn't you just say you don't want a Glock because you are afraid you will pull the trigger when aren't supposed to? Hmmm, I wonder why I am typing this then...Oh well, just another opinion to throw in the pot.