Hey Jack, My last build had a JB Jr. in the bridge, and two sweet vanzants in the middle and neck, the VanZants outpower the Jb jr in a bad way. My buddy even wanted the Jr. split (waste of time in my opinion) anyway, the Jr. has a great sound. but needs a bit more punch for the scenario I put together ( I didn't pick the pups)
We ( I ) put a push/push in the middle tone, to turn on the neck/bridge combination, that is a very cool sound with the bluesy tone of the Neck VanZant with the little crunch of the JB Jr.
Overall, I like the VanZants bigtime, and the Jr also. just not a good combo together.