I've never skied on the Voile, Black Diamond, Altai etc scales and perma-skin skis. But I'm also not about to go buy them all. If any of those makers want me to review and highlight those skis and link to them I'd be happy to try them out.
I also am seeking old Scarpa T2 boots and triangle toe screw pattern cable tele bindings.
Or you could just try this..
Homemade fish scales
I don't know how well it works but I do plan to try it soon and will document the effort on @wfg_den. Stay tuned.