Pocket carry is a compromise for sure. I've tried a lot of different things and the only gun that works for me to get a fast and consistent draw is a hammerless (shrouded hammer) J-frame. I can get a full firing grip on draw and the sloped or angled rear doesn't get caught on the pocket.I pocket carried for a long time, but it is definitely slower to draw from. It is also hard to carry a decent sized gun with pocket carry.
I've even tried the thumb on the rear of the slide or hammer trick and yes it helps get the gun out of the pocket, but I can't get a repeatable and consistent firing grip to manage recoil properly with 3 or 5 rapid shots right out of the pocket.
Sometimes pocket carry is a necessity for me, so I train for it, but I greatly prefer AIWB whenever the situation allows.