I see - not what I thought.
However - I simply don't understand. So probably best to start with something that I think I can get my head around.
More and more I think it best to have a simple Pickup to volume to outbut... with a space that I can later put a switch in (whether on front - or in the back).
If the Fender dual value pot was push/pull as I originally thought it was - it'd be easier.