I bought this to use as my main high gain sound through my Bassbreaker 15 and Blues Jr stereo / wet-dry setup, running my amps clean. 
 
The pedal sounds good at most EQ settings. If you scoop the mids it can sound almost like a Friedman BE-OD. The pedal does however have limited treble range. I mostly wished for more highs since the Bassbreaker is very dark. So, it depends on the amp. I also find that amp-in-a-box style pedals don't work as well with low headroom (ie 15 watt) amps if you play loud, since it compresses too quickly, too much. 
 
PROS: 
- High quality as expected from JHS 
- Simple to use, hard to make it sound bad 
- Effective mid control 
- Convincing amp-like feel 
- Hooked Andy Timmons :) 
 
CONS 
- Limited Treble for some amps. 
- Needs decent headroom (more than 15 watt) to be played loud 
 
Would highly recommend for pedal platform players that need a versatile high gain sound or bedroom players looking for gain and low end at low volumes.