Well, it depends on who's world would be inflected with the pain, if not the player's (you) I say go for it.
Some simple plan Briand eheh.
Just my sugestion, why not make it like a ES-Mitch (357). You could assign a pup to a seperate 3-way and select between having it off, on with whatever is on at the moment or alone. Since its having a preamp and all those controls I think it might be easier during play and keep you from having to many switches wich would probably make it look a bit clutered. Just my two cents.