OWB appendix carry?????? Interesting...
IMO, CM/PM are short enough that they do NOT push on the thigh.. the thinness of Kahr is perfect for IWB, they are SUPER comfy even for AIWB.
Anyway... for appendix IWB you can just buy a Mitch Rosen "CLP" (or Clipper) from Kahr shop (or direct from Mitch) and be happy.
Top is from Kahrshop. Bottom is from Mitch direct.