[quote name='Rayman' post='865751' date='Jun 13 2010, 10:14 AM']I don't have a problem with signature basses at all, as long as you're buying the bass in it's own right, and not because of the signature on the headstock (or fretboard in Stings case).[/quote]
This.
I'm with the OP. It does pique my curiosity when a new signature instrument is released, but only because I am interested to see what the player has specified -- is it a completely new shape/everything, or just a fancy paintjob on a standard instrument and a grand added to the price?
I would consider buying a signature bass, if I played one and liked it -- for example, if I was in the market for a new Jazz I'd definitely try the Geddy and Marcus models. It would have nothing to do with who the signatory was.