I'm not a roadworn fan and am under no illusions that I could morph myself into Flea, so it's a no from me.
I had a go on one some time back in a music shop and was underwhelmed.
That said, I do have a neckplate off a Flea which is destined for a fretless partsblaster I'm in the process of putting together, or maybe I'll put it on my other fretless Jazz which has pickups and controls off Geddys (two different ones); thereby making it a mixed celeb bass!