I cuddled a few holsters before being seduced by the Comp-Tac MTAC. Double leather backing with kydex shell. The most comfortable holster I've worn allowing me to carry a Walther PPQ from 7am to midnight everyday and forgetting it's even there. Can walk, run, flip, do hand stands, cycle, bounce on a trampoline (have a very active 5yo), crawl under my old cars and heck yes.. even swim with it on. Really.. I wound up in the water swimming last year with it when I had to jump in to help another boater. Most of my handgun purchases are followed by an order to Comp-Tac for a matcihing holster or a shell. Every position is adjustable allowing one to fit it to where one likes and is most comfortable. The PPQ shell can be removed and a PPS shell installed onto the backing though I usually just order a complete unit. I usually have a t-shirt tucked with another shirt/sweater over however often just toss on a t-shirt on and go as well with the leather directly against my body. Just as comfortable.
Costs are a bit higher however the quality, comfort and durability are there so I dont mnd. I also have a couple of thier double layered belts that have a kydex reinforced center. Excellent belt that holds up and retains its original shape.
I also wear at 3. 👍