Thanks, Eric. I really like it so far. I've got it running through my 1 x 12 Epi VJ cab, but I think I'll migrate it over to the 2 x 12 where the Night Train is sitting now. Yes, the Night Train has been dethroned for the moment.
Impressions so far from playing for about 45 minutes; the tone controls are WAY more responsive than my Night Train's. The Infinite Shape Feature, which is meant to shift the tone between British and American is pretty sweet. So far, I like it about in the middle, but slightly toward the UK side. The clean channel, as I expected, sounds really "sweet", but there's not a whole lot of clean headroom. It sounds best with alnico pickup guitars and the volume turned down a bit on the guitar itself. Diming the gain on the OD brings out the beast, and it sounds mean as hell. It doesn't sound like my Marshall, though. It might be the speaker, or just the fact that it hasn't broken in yet, but I still think the Marshall is king of high-gain.
Tomorrow I'm going to try using a jumper between the effects loop in and out, and see if that makes a difference. Might try some pedals in front of it, too.