Not P90's, but I'm using a QP on my Esquire right now. It gets heavy! (It's also P90-ish).
Honestly, I've never found the noise an issue. I don't know if you run a Noise Gate. I do. I think it's pretty common to use one in Metal. Either way, I don't even have set mine up differently than when I plug humbuckers in.
I've always wanted to order something like a Custom Seymour Duncan P90 wound in the 15K range with dual oversized Ceramic magnets, hex polepieces, and the Black Winter font, LOL. Sadly, I don't own any P90 guitars right now.
I don't think it's about dyamics or touch sensitivity or whatever. I like my Metal rhythms heavy and machine-like. But they do have something interesting/unique going on in the attack that humbuckers don't. It's sort of a clang/twang that's not over-the-top scratchy/squealchy like a Fender single coil.