I've got a Fillmore set in a LP, and a Herc in my PRS Singlecut. The Herc is the biggest, fullest pickup I've ever played. I don't know how Jim does it, but the pickup stays clear and pretty quiet. Did I mention how big that pickup sounds???
Ive got one of Jim's Iron Man prototype pickups and that thing is massive!! 22k of pure tone. Ive got a Fillmore & a Crossroads in my Nunis custom and love those too. Its crazy that the Iron Man has that high of a rating but is still musical, and not harsh. Jim is the man!