I'm sure there is autos in existence that have thousands of rounds through them without a single FTF. If, in a must work situation the rare FTF occurs you have to do something. You must take your eyes off of the target and look at the gun. Is it a stovepipe, fail to feed or a bad cartridge?. Then take action to correct the problem.
With a revolver you only need to pull the trigger again....
Usually. But I have to tell you what happened to a J-frame S&W redolver that I once owned - and have long since sold: It was an all steel J-frame (I forget which model) . I got off one shot at the range and the cylinder jammed. (It had nothing to do with the internal lock - which had been totally removed.) I could not get the cylinder to turn for love or money. My local gunsmith was able to correct the problem in less than a minute, but had that happened in a defensive situation, I would have been screwed.
With a semi auto, a FFT or a FFE can be cleared up in seconds... if you know what to do and practice the routine.
I do not mean to cast aspersions, but in my opinion only, anyone who carries a cheap pocket auto and/or anyone who carries any pocket auto and fails to practice the "tap... rack... BANG!" routine is simply asking for trouble.
I carry a Kahr P380 in my pocket. It weighs 10 ounces (empty); holds a total of 7 rounds, and conceals in my pocket MUCH better than any J-frame ever could. But I am thin. My buddy, who is rather chunky (to be kind) ALWAYS carries a S&W 340PD in his pocket and you'd never know it.
So... here are some reasons to carry a QUALITY semi-auto as a pocket gun:
1. light weight
2.
easy to conceal - even in a front pocket when wearing jeans
3. Two extra rounds (which is important for the "spray and pray crowd."
When it comes right down to it, the best gun to carry is the one that makes you feel good about carrying it.
If you have to justify your reasons for carrying it, you are carrying the wrong gun.