This is why I pretty much buy everything from them now but if companies like Tenicor and PHLster changed to injection-molded goods I'd buy alot more from them. Bonus points are you can leave them in your car as spares or secondary carry options to repurpose your gear for the environment you find yourself in. I'd never dream of leaving kydex in a hot car in FL without fear or it being destroyed rather abrubptly.
I just DON'T care for kydex, I've always had a distaste for the touch/feel of PVC and kydex is very similar chemically and there's just always been something offputting about kydex because of that. I get that it's easy for anyone to start molding but that doesn't make it the most suitable material. I think this is especially true for knife sheaths where strength is a real concern to me, case in point Abe and Moe's sheath. https://abeandmoe.com/sheath-of-the-future.html
But look at that price, lol. Ideal but certainly not practical or easily done for any given knife but kydex sure scores points there if nothing else.