Thanks, Skip
In this type of finish, the clear coat is essential because the
color coat has no gloss to it at all, and it also has poor wear
resistance. It's only for the color. It shoots very flat and
you don't need a lot of it because the clear coat is where the
film build and desirable properties come from.
It's also very easy to use. You'll be impressed with this product
if you try it. It even has decent flexibility characteristics
so it'd probably be decent even on an acoustic instrument.
CJ