Most IWB Kydex holsters use leading-mounted clips. The clip is mounted towards the holster higher than the place it might sit to the belt line. That mount model stops you from tucking in the shirt with your holster. There are actually a couple of businesses that specialize in holster tooling. https://kydexholstersreddit03579.aioblogs.com/80280131/a-simple-key-for-kydex-holsters-solutions-unveiled