Wow, I've not heard "requires MUI" in a long time. I remember back to the times where I would always look at software and think it's really cool, then notice that it "requires MUI" and get disheartened. Of course, that's just because my Amiga sucked... I've nothing against MUI in general, aside from the fact that it doesn't quite conform to the standard UI widgets.
I wish I still had an Amiga around to try it out. I feel that installing UAE on my PC to use it would be a slightly pointless exercise! ;)