One of my Ibanez guitars has a Steve Vai Evolution set, complete with a reverse wound single in the middle. It is wired so that positions 2 and 4 are full humbucking between the HBs inner coil and the single coil.
Honestly, positions 2 and 4 are pretty useful because I can tune the output of the "fake" humbucker by using the height of the middle SC. This way I get two useful "in-between" sounds. I never use the SC by itself. (Should probably change the wiring to do something else.)
Frankly though, I think I could accomplish something similar with just two humbuckers. The in-between humbuckers (lower output) are not all that different than a parallel wiring. And a middle SC is never really as useful as a bridge or neck SC split.
IMO, I'm not a big fan of the middle single. Also, my picking mechanic uses my pinky as an anchor on the body and I can feel the single sometimes.
Honestly, positions 2 and 4 are pretty useful because I can tune the output of the "fake" humbucker by using the height of the middle SC. This way I get two useful "in-between" sounds. I never use the SC by itself. (Should probably change the wiring to do something else.)
Frankly though, I think I could accomplish something similar with just two humbuckers. The in-between humbuckers (lower output) are not all that different than a parallel wiring. And a middle SC is never really as useful as a bridge or neck SC split.
IMO, I'm not a big fan of the middle single. Also, my picking mechanic uses my pinky as an anchor on the body and I can feel the single sometimes.