if it's a rosewood fretboard, you may be better off to have the luthier lift the original board, put down a new one and fret it up for you.
lf he's a worthy luthier, he'll be able to lift your old board, and fretting a new board is HEAPS easier and probably more reliable, too.
However, if you go through all that trouble, why not go ebony?

an ebony boarded P-bass, now THAT would be a rare instrument
