I have a Kel-Tec in .32 and the P3AT, and also have a Bersa in .380, and other handguns ranging in caliber from .45 to .22.
I have never particularly notice the recoil with any of them, nor have I had to readjust the grip after firing. My favotire, of the three, is easily the Bersa, but because of concealibilty I usually carry the P3AT.
The front trousers pocket offers some advantages. If a situation looks like it might get tense, you can put your hand in your pocket and have the gun in your hand, ready to draw, without it being obvious or threatening. You can't pull up your shirt and grab the butt of a belt carried gun like that without everybody seeing and getting freaked out. So you can't get a belt gun ready in advance, but you can do that with a pocket gun. Street-wise perps will usually know exactly what that means when you stick your hand in your pocket, but others won't.
To aid in concealment, I put something on top of the gun to break up the outline.
I haven't tried the sights on the Kel-Tecs as I consider them point-fire guns, and have practiced with them using that method. One hand draw and fire. Aim by the gun being an extension of my arm and pointing. Range for firing is only a few feet. They point very well, at least for me.
I bought and began to carry a Kel-Tec when I was working the midnight shift at a convenience store. The company policy was very strict - no guns at all. So if I carried, it had to be able to not be detected by people who would see me daily. It never was. (Two weeks after I quit, they were held up.)
I did not plan on shooting it out with any robbers. If I thought that all they wanted was the cash drawer, then they could have it. But sometimes they want to hurt the attendent and so I carried.
For ammo, I use hardball. It feeds better and due to the low power of the cartridge I am opting for greater penetration of hardball.