I've not tried Kydex for door skins. When I redid mine I used mahogany door skins I bought at the lumber yard. To do it over I'd probably use 1/8" Baltic birch plywood. The door skins worked great, but I believe baltic birch would be even stronger. The one thing I learned is that staples were needed... I tried only using contact cement. In the summer it gets hot enough inside a 40 in the summer to soften contact cement and the vinyl then came off.