Cool, I'll test on a scrap over the next couple days to be sure. I'll be putting it over Rustoleum Black Specialty Lacquer (their ultra-shiny black acrylic lacquer).
I realized after I sprayed it that there were still alot of little sanding marks in the wood (even though I had used 100, 120, 220 and 320 when I stripped off the old finish).
So I knocked the black lacquer down to a matte finish w/ 0000 steel wool, which took out probably 80-90% of the scratches since the lacquer filled most of them in. I just want to use the sanding sealer to finish leveling the surface off without having to strip the front & back of the guitar back down to bare wood again.
Once I use the SS, I'll top it off w/ some Deft gloss nitro.