I'm planning on getting a Schecter Hellcat VI but I'm going to mod the electronics. It has 3 mini-humbuckers with a coil split. I want to add another push-pull pot as a phase reversal switch. If I understand it correctly, I would want the switch to reverse the phase of the middle pickup so positions 2 and 4 are out of phase. Will this work in both humbucking and single-coil mode? And are positions 2 and 4 hum-cancelling in single coil mode (both in and out of phase)?