So far it sounds pretty good on stage for the clean stuff. Doesn't take pedals as good as a real amp but I'm pretty impressed so far. I'm using it for at least a portion of the first set.
I played 60 of the first 80 minutes through it. It gets the job done, sounds better than some backline amps I've been stuck with. Kinda like an AC30 with tired tubes. Good enough to get me out of a jam.