I would go mag as long as you're not using guts or similar that don't create a field. My view is that you really want a PUP that produces a different tone to the Realist to give you wider options. I found that using a mag, which gave me very reliable and quite thumpy lows, I could EQ the bridge PUP to give me more highs (and cut some of what were to my ear less toneful mids coming from the bridge PUP), and then tune the balance of the two to get close to the sound in my head. I never get anywhere near perfect, but got close enough 👍