Originally Posted by Bill Lumberg
Leather holsters are no kinder to the slide than kydex.
Pretty much the opposite - sand and debris will fall of of or be easily brushed off of the kydexk, plus the kydex doesn't keep as much friction on all of the gun. The leather is tight to more of the surface and, if there is sand in it, you just wrapped you gun in sandpaper.
If you are worried about wear and sand, get kydex.