I'm trying out an experimental setup in my HSH Squier that has Tone, Volume and three toggle switches. The toggle switches are DPDT centre off, and for the humbuckers they are humbucking/off/coils tap/single coil, and for the pickup in the middle its wired in phase/off/out of phase. I'm making pickguard changes as well though, and I haven't got to play with it much. I thought a lot about combinations involving 5 way, push pull pots etc, but they seemed to get royally complicated and yet quite inflexible. Also the miniature toggles are quite cheap!