Well, the room wasn't too big, our drummer played at normal volume, with a small sized kit, only the bass drum miced. It sounded nice and warm and loud enough, and still gave extra noise when I kicked in the overdrive.
Using both Midget and super Midget I had the input gain on 0, master on 8 and my (passive) bass on 8 too, just in case any extra was needed as we got louder during the set. Not required. The Shuttle stayed in its bag.
All in all a very satisfactory result, better than I was expecting, by quite a bit.
#chuffed!