Actually, I'm pretty sure he still uses the Lee Jackson in the Effects loop.
And if he didn't like the AYDY tone, then my guess would be HCDR/Blooddrunk. Because those are his two favorites at the moment. I doubt it would sound like FTR or Hatebreeder, because he also hated the tones on those, saying that they sounded too flat and digital, along with the production. He likes the rawness of HCDR, and now Blooddrunk. So chances are that if this HZ pickup is at all different from a pre-existing one, it'll be aimed at those tones.
EDIT: Oh, and Fastbodom, the first line of your sig is wrong (and doesn't even make sense). I was there at the show that happened. Alexi said, "Whatever, before we play this last song, I have to tell you guys something for real, and I'm not fucking bullshitting you guys either, dude."