That pickup looked very interesting and I was considering it, but I seriously doubt it replicates either sound perfectly. I'm not slamming that idea or pickup, but there are tradeoffs with all purpose gadgets. If something is dual purpose, it usually does neither well - doesn't mean it can't sound great. It just won't sound 100% like a J of MM. I've seen it with other pickups, humcancelling single coils and P-rails. With the P-rails, by all accounts they sound great but not like a P-90, Strat single coil, or humbucker. They are an approximation of each of those sounds and are close enough. With humcancelling J pickups, something just doesn't sound the same when that 2nd coil is added. Same with humcancelling P-90s.