I don't like the yards DF kydex ,it is an ugly blade scratching thumb buster.
I have had both Yard DF sheaths and a Rainwalker leather sheath. If you want a easy to maintain sheath the nylon one is much better. If you wore tyhe kydex sheath on your clothing and fell on it you would hurt yourself a lot worse than the nylon or leather. It is also noisy and it bit my thumb(I am mostly pissed about the thumb). Anything bigger than a CampTramp should not be kydex, but good kydex is especially suited to small neck knives.