I occasionally gig with a Micro Terror (I use it as a back up to my Dual Terror if in case anything goes wrong). It cuts through the mix well. I've used it in Saguijo, IDB and I let my bandmates use it in practices and in venues wherein they have cabs like Apache in BF.
Here's a vid of my band while I'm using the Micro Terror on an Orange 2x12 open back with Celestion V30's (I'm on the left):
I'm using a Fender Baja Telecaster plugged straight into the amp. No pedals whatsoever and my volume and gain is at around 12 o clock. That being said, I wouldn't advice using this on speakers with low sensitivity.
Here's another one with us as a 5 piece (3 guitars, 1 bass, drums and I'm still using the same guitar with no pedals):
