I am thinking about picking one up and cannot audition it so to speak. Are they kick butt?
Not sure, but I own the Rocker 30 combo (similar, but slightly different amp) and I can say I'm pretty satisfied. Even at only 30 Watts it's loud as hell.

Expect a lot of british crunch with emphasis on the mids.
Has more gain, but also slightly more modern voicing than the Rocker at the same time - different valves make a hell of a difference too.

A very good choice - in the top 10 amps in a top end fairly expensive pro amp market