My guitar is a modded RG570 - basewood
Neck - FSK Driver Humbucker
Middle - HS2
Bridge - Steve's Special
I only have Volume & 1 tone setup.
I personally think the guitar sounds great for the $150 investment, but I did it myself.
DRIVER OFF, I have a sweet neck tone which seems close to my Evo Neck DP158, its just has slightly cleaner over tone.
With DRIVER ON, works across my all my positions, which just creates sustain, you can site there for days on a note.
So I have the Driver on with my bridge to get more of the bright lead sound & sustain, or you can just switch to bridge, and you have the creamy overtones of the neck sounds.
It's great to play around with the single notes sliding up and down the guitar or especial using the whammy, because it seems the note & tone never dies out; the auto Harmonic is cool also.
My neighbor came over and never heard of it before and thought I had some effect sample running, until I told him it was the pickup that just keeps the string vibrating.
I do feel the vibrations more on the lower wound strings.
I just think the routing is what I would be more worried about, and especially to a JEM. If you have no experience with using a router, I would suggest bring it to a shop, unless you will install this under your pickguard somewhere. (personally I think it will be in the way of other electronices or how you play external, under the pickguard.)
You can see here the toggle swiches on the board. (Board is about 2 1/2 x 3 inches)