I bought this as a loaded pickguard and these were my only options. I am really liking the setup so far, Especially the individual pickup tones. I think the push pull pot is good for the Bridge and Neck position but I'm not a fan of the all three position. I may look into a Magnatron Bridge for the middle, I'll bet that would sound great and have a nice contrast with the others. I have had Powertrons in a Humbucker mount in a Telecaster and really didn't care for them much. It's like once they put them in the Humbucker cases they lost their "TV Jones" tone.
I have 2 other 87 E4 serial number Strats with the swimming pool factory route. I thought about possibly building the same pickguard with the Newer TV Jones Duo-trons that they have out with the Split Blade and pole piece magnets. I'll bet the would blow some smoke in a strat setup. That is something for a later date though. Take it easy!
TX