I go to check out the 1212 version of this cab at a gig last week - a buddy of mine was playing through it with an Eden WTX500 i think. It was a small bar gig with no PA support. He was really pleased with how loud it was on stage, and it punched through just fine with a loud drummer and loud guitarist, but it didn't really have much bottom out front. He had the Eden turned up about 50%, which I know would have rumbled the house with two Berg 112s.
In short - sweet cab, but nothing I would replace my IP/HT112 setup with.