These are really excellent. Liam has done us proud here. More mid gain profiles etc would definitely be cool.
I tried a more old school cab on these (both the DIs and some of the others) with great results - I borrowed a 1960a cab with 70s era 25w greenbacks from a profile on RE (1959RR Ch2 Vol 6 by David Gerard Burns). It is miced with a single 57 and does the business on Marshalls pretty consistently. Between the V30 sound and the GB sound this amp covers a massive amount of ground.