Late to the party, I know. Being at the cutting edge has never been in our mission statement, and no problems have been reported with our apps running on Big Sur under Rosetta (Good job Apple).
This was the first attempt at building Integrity as a UB (which contains native binaries for ARM and Intel based Macs). Of course it was going to be more efficient but I didn't realise just how much faster this would run as a native app on one of the new machines.
The UB versions of Integrity, Integrity Plus, Integrity Pro and Scrutiny are all available on their home pages. They are still in testing and the previous known-stable versions are there too, but all seems fine so far.