From experience, I can say that the best holster I had did not use leather strings to tie anything down, whether around the thigh or around the hammer. They used straps and buckles, like a belt, so you could adjust for lighter or heavier clothing. And ALWAYS, a loop secured with a snap to anchor the gun. Knew guys that had walked for miles, then discovered the gun had slipped out when doing some straining or stretching. One guy found his, one guys didn't.