I've had a play of this and I'm totally amazed at how well it works.
Kudos to Rob Smith (and Keir Fraser for the Greaseweazle side)!
I've tested with my Greaseweazle F1 Plus boards (
https://github.com/solarmon/Greaseweazle) and I was able to load AmigaDOS disks fine. And even long track games like Lemmings seems to be OK. But at the moment I can't get Xenon II (1 disk) to load.
Lots more to test and try, but this is a big milestone!