I don't remember; do they?
From the factory they come with a satin finish, but with use this does wear glossy smooth (depends on the player and how much use). It never gets that sticky-icky polyurethane feel, though.
Does this paint/coating improve neck stabilitiy throughout humidity changes? My current bass, a cort curbow w/ a basic maple neck needs an adjustment if there is so much as a clowd in the sky. lol