I took a class from the great mandolin builder James Condino on how he does hand applied stains and sunbursts. His stains are water based because he does use FP over the top and says if he used DNA for the solvent the alcohol in the FP would pull the color back. The seminar was about the coloring, not the finish itself. I haven't tried with FP - I do a lot of staining with DNA as a solvent followed by lacquer. The traditional Gibson bursts were all done with hand applied stains and then finish over the top - as always, experiment on scrap.