I know Mr. Duncan has done work for the likes of Hendrix, Clapton and Page (and obviously Beck), although I don't know at what point in their careers or anything like that though.
Although, I did notice something along these lines the other day...
I was watching the Led Zep DVD (Disc one, the gig from the Royal Albert Hall 1970), Pretty much the whole set JP plays his LP Std (the one with a covered neck PU an Double Cream bridge PU)...
Then for the encore JP is playing a Black 3PU LP Custom with a Zebra neck, Double Black Bridge and Nickel covered middle (although customs have gold hardware?)
I'm guessing he got that Double Cream out of the middle pos of the Custom and stuck in the Std. Does anyone know anyhting about this?
The custom was later stolen, I think.