One thing about deep concealment is the people you only casually come in contact with are easily fooled. but people you see and work with everyday are much harder.
My mom's uncle wore suits that had a leather pocket sewn in. That stiffer pocket kept his gun from sliding over and making a clunk as he sat down on a hard chair. it kept the gun from being outlined through the pants pocket, and kept the gun from wearing a hole in the thin pocket material. That was before flatter semi auto pocket guns were common.
Just stiffining the pocket will do the same, and allow you to pocket carry. That stiffining can be as simple as an iron on patch that wraps around the pocket. I have done this mostly to repair a pocket worn thin from carrying too many keys. But it works well to hide my J frame revolver that I pocket carry. I can pocket carry in "fairly" tight Wrangler jeans without the gun showing through. Good Luck. DR