Tom mentioned further up thread about how this live feed was a great showcase for the tonal variety possible from an Alembic guitar. And it was definitely that. He had a very wide range of tones and effects that all sounded wonderful. There was one time in particular that struck me where he played a riff, then turned the filter just a bit, and then continued playing; it was the same type of change that I get when I turn my filter just a bit. And in the usual world of watching guitar players in bands, that's not something you hear often, because most other guitars can't do that unless they've been modded with a filter circuit.
And I may be wrong here, but it looked to me that he was going direct to FOH rather than micing his cab. Interestingly, it looked to me that the only cab he had was a single 12, with which he got some nice feedback when he wanted it.
The sound quality of this live feed was very good, and I was able to hear the subtleties of John's tone much better than with the usual youtube videos. I was really impressed with the quality and variety of tones he was using, and his command of them. This was indeed a great example of the possibilities that an Alembic guitar makes available.