I have written of this in one of the 'other' forums. I principally took a leather slip, like the one shown above, and punched a hole in it and used my old Boy Scout skills and braided a lanyard into a loop that fit over your belt and the slip hung in your pocket at just the right height to stay against the hem side of your pocket, not on your bragging side. For many a year I carried a Buck slippy, usually a 303, in my uniform jeans watch pocket. I never needed a bigger knife to fight off grizzly bears or hack down trees. But all things change and we went up-scale and wore lighter weight cargo type pants with deep pockets and no watch pocket. Used the same method, until I was drawn in by the dark side and started carrying a Vantage with a clip. I retired and found my favorite pants to be the khaki "fisherman" pants with plenty of pockets. I took needle and thread in hand and as the pockets were loose and not sewn to pant legs, I made a pocket against the hem side of the pocket just long enough to hold the knife under the hem.
the only problem I saw was that it would fall out if I stood on my head and I cured that by never standing on my head again. 300Bucks