This is one of those issues that I have lots of first hand experience with but you would think that it’s a simple way of carrying a firearm. I still run into people that don’t use holsters but in the age of Glocks and firearms with no safeties, I do not think it’s a good idea to have a firearm in tow that does not have it’s trigger covered. If you wouldn’t carry a knife that is un sheathed why would you carry a fiream without a holster? I have tried to carry firearms in my pants pockets several times in the past but I have had several failed attempts. Both times I was carrying j-frame revolvers and either the gun didn’t sit deep enough or I had snagging that was unacceptable.
I’ve used Uncle Mike’s pocket holsters in the past and they were OK, but I’ve taken fabric scissors to them and had to make adjustments to avoid the snagging issue. One of my favorite new Desantis holsters is the Desantis Nemesis, they are more money than the Uncle Mikes pocket holsters but they do a better job of slipping free when you pull your firearm. Pocket carry is something you really have try out with your clothing and your method of carry. I’ve seen guns fall out of pockets when people go to picnics and that is bad.