(1) Glue a 3.5" strap of leather to the back of the belt where you want to holster your pistol. Only the ends of the strap should be glued to the belt. The middle 1.5" should remain unglued.
(2) The unglued center section leaves a channel between the strap and the belt between which the holster clip may be passed.
Wow! What a great idea! Is anyone making this commercially?