I had the opportunity to play this amp a few times over the last week or so. The clean channel is decent; not amazing in the chime and jangle department, but not bad either. Channel 3 is way over the top for me in terms of gain.
Channel 2 is where things got interesting. After messing with some different settings on this channel, I turned the gain down to a bit below 9 o'clock, turned up the mids and master volume, and it sounded fucking great!! Set like this, you're at about Fair Warning levels of gain, and the amp is much more open and touch responsive than some of the videos would lead you to believe. I was really surprised by how good it sounded and how well it responded to the guitar's volume knob.
Everyone plays differently and dials things in differently, so I would not write this amp off without playing it yourself first. It's definitely capable of a lot of different types of tones, not just gained out metal on the dirty channels.