I have tried several pocket holsters and the one I like the best for my 642 is made by FIST. The holster is made from ultra thin kydex and it does not matter what type of clothing you are wearing because the pistol is drawn from the holster by using the thumb push, which works flawlessly. Some holsters I have tried in the past required tighter pockets to prevent the pistol from coming out with the holster attached. With the FIST, you can wear shorts with loose pockets and it does not matter. I have not checked yet, but I would imagine that they could/do make one for the Shield.