I do have 2 or 3 StealthGear IWB holsters although none for TP9SF. The VentCore ones are very comfortable albeit a little thicker than other holsters. I have a revo also and it's thinner and still pretty comfortable, just not quite as good against bare skin. One thing I like about them other than the comfort is that the kydex is as small as possible for the gun it is designed for. I guess this also contributes to comfort as you don't have a long piece of kydex that is trying to curve around your body. They occasionally have specials and that's the time to buy them, relatively expensive otherwise.