I've got one of these and tried it. Clean tone is extremely good, can work with it very comfortably - one can get awesome clean tones with it.
Crunch/over-driven tone.... I couldn't get anywhere close to my real tube amp here (using same guitar, same over-drive pedal in front of it, etc). I found it to be quite sterile.
Now, if they make a version of this with the Vintage voicing or Rock voicing (a-la their 'Spirit of Vintage' or 'Spirit of Rock'), then that might be something; you never know... they might do that. Would definitely give it a try if they do.