I replaced the 58/15S in my S2 Standard 24 with a DiMarzio Bluesbucker in the neck and a Duncan 59/Custom bridge in the bridge. The pickups are oriented so that the stronger coil is on the inside. I added another push pull pot for the volume pot. The push pull on the tone pot puts the bridge pickup in parallel. The push pull on the volume splits the neck pickup and puts the bridge pickup in sincle coil mode. That gives me the following options:
1) Blade switch treble, both pots in = bridge humbucker series, humcancelling
2) Blade switch treble, tone pot pulled = bridge humbucker parallel, humcancelling (a Gretschy tone)
3) Blade switch treble, both pots pulled = bridge pickup neckside coil
4) Blade switch middle, both pots in = both humbuckers, humcancelling
5) Blade switch middle, tone pot pulled = bridge humbucker parallel, neck humbucker, humcancelling (a bit brighter than both humbuckers), humcancelling
6) Blade switch middle, vol. pot pulled = bridge humbucker, neck humbucker bridgeside coil
7) Blade switch middle, both pots pulled = inside coils of both pickups, humcancelling (strat like in-between tone)
8) Blade switch bass, both pots in = neck humbucker series, humcancelling
9) Blade switch bass, vol. pot pulled = neck pickup bridgeside coil
Probably not the quickest to switch positions on stage but it gives me the tones that are most important to me (1, 2, 7 and 9 - I don't know of any other set up that gives me both 2 and 7).
Cheers Stephan