After seeing Buckspen’s excellent
Model 19 with two security straps on the sheath, I was intrigued so much that it inspired me to make a second strap for my Model 5 sheath without permanently modifying the belt loop. I copied the existing security strap as close as possible (width, thickness, color, finish, tooled border line) so the new strap would match. The strap goes through the belt loop. For a custom fit, I wet formed it around the handle and belt loop. Works well for additional security and is easily removable.
Thanks for looking!