I really don't understand people who categorically refuse to own a signature bass. If it has the sound, feel and looks you look for, who cares? Maybe you dislike that specific player's way of playing, but you're not them, right? I have a JMJ Mustang which I bought because I wanted a very very good Mustang, and this is one. I saw a fellow Dutch bass player doing a regular pop music gig with her Troy Sanders signature PJ. I have no clue if she's a big Mastodon fan, but my guess is she just likes a silverburst Fender PJ.
So basically my point is: a signature model isn't different from any other model. There's just a signature on the headstock.