I had a '61 repro stack knob plate in my "composite" Jazz I put together (Worn 2006 Highway One nitro body, MIJ Geddy Lee neck, Lindy Fralins, 60's bridge) - what I did like about it was that if you were digging in hard finger style, you could roll off the treble for the neck pickup to remove string clatter but still have a bit of brightness in the bridge pickup. This only works if you have the volume of one of the pickups rolled off slightly- if both are up full, the tone pots "cross talk" with each other. I ended up going back to a 70's repro VVT config on that bass, I found it much easier to use live and weighs half what the stack knob config does! I put the stacked knob in my '89 MIK Squier Jazz (this bass has a really dark sounding rosewood board and Fender CS 60's pickups), the stack knob config sounds great with this bass and GHS flats on it.
