I've got one of the BM Guitars Red Specials, and it's a peculiar beast. From my experience, what I've read about how he used it does fit - definitely bridge + middle series, in phase, is his main "rock" sound. Bridge on its own gets used a fair bit as well. Neck + Middle, series, out of phase is his signature lead sound. I think a big part, though, is the AC30s running full tilt with a treble boost :lol:
Anyway, I was thinking MQs, MQs, MQs... all the way until I got to "Can't fit a pair"
I have MQs, and the BM pickups sound most like them in a humbucker size - MQs are a bit more powerful and thicker than the BMs I have. (What the BMs really sound like is a cross between a tele bridge and a strat pickup - but neither of those will work for your guitar).
If you're talking one humbucker-sized pickup only, I think you might need to consider a humbucker with switching for splitting, phase, etc... (as I don't do this kind of thing, I don't know which BKPs take best to this)
Otherwise, for me, it would be a toss-up between an MQ or a Mule - I'd probably choose a Mule myself.