Personally, I don't get IWB for small guns. I used to carry that way, but what's the advantage if you're carrying gun with a short barrel? Here are two Gen4 Glocks (19 and 26) side by side. On the left is a Galco IWB holster. One the right is a Mitch Rosen UPL-EXP. It's also why I sold my G43.