Which, of course, is what the AC30 did with the reverb/trem channel.
I bridged both 'channels' at the input jack so you can use either or blend them just by adjusting the volume controls. I've been considering adding switching to ground out either grid, but something about a channel-switching Rocket just feels so wrong.
Anyway, it gives you a whole bunch of new tones, and you still get plenty of overdrive with just one gain stage before the PI. Hit it with a treble booster and get your Brian May on!
Using both 'channels' at the same time really fills in the mids. Ups the gain a fair amount too which isn't necessary, but what the heck.
Apologies if this has been done thousands of times before, it just seems so obvious but I haven't found any mention of it. I'd have clips but an old power tube shorted on me and took out my power supply and possibly the Crate OT as well.
On an unrelated note, an Antek AS-1T250 does have plenty of juice for a Rocket. At least a solid-state rectified one pushing a quad of 6V6s!
There was some speculation a couple years back here that it wouldn't be enough, but the math looked like it should and I can confirm experimentally that it works just fine. B+ doesn't hardly sag at all, though people might consider that "oversized" for a guitar amp, I'd rather heat up a sag resistor than a transformer. 
