Summer, is shorts and polo's for guys, and that means pocket pistols, because carrying any sized 1911 is not really practical in 90 degree/85% humidity weather.
There are a plethora of small, pocketable pistols in calibers from .22 to .45 available. So power is not the issue in pocket pistols, but recoil is harsher.
And don't forget revolvers. They rarely fail, better power factor, 5-6 shot, and you can still carry in a pocket.
Remember, you're not out to fight a war, but to give yourself an opportunity stop a bad situation from getting worse, and living to tell about it.
If you have never been in a personal confrontation where having a weapon kept you breathing, be glad for that. Because everything that happens AFTER that is where the nightmares begin.
And the number one rule of carrying concealed,
DON'T CHECK THE WEAPON EVERY 5 SECONDS.
If I had a dime for every individual carrying that I knew of simply by the continual weapon check, I'd have more money than Jeff Bezos.
If the pistol is in your pocket and was secure when you left the house, LEAVE IT ALONE.
If you are holster carrying, and it was secure when you left the house, LEAVE IT ALONE.
Do some observation while out at the stores sometime, see if you can pick up the folk that carry.
See that way too many times. I can spot them all too often.