Yeah, I read through the website a little bit, installed the anti-cheat and did a scan.  I don't keep any cheats on my gaming machine so it shouldn't of caught anything- I didn't even try to run UT3.

I have some UT3 and UT99 cheats on a couple VMs.  I was tempted to see if it works but I didn't have time to set up a test server and talk with the admins over there.  League anti-cheats generally have more success at working since there's so many of them and it effects a smaller number of people that want to cheat.  Something like Punkbuster is more susceptible to being bypassed since the anti-cheat effects pretty much everyone that wants to cheat in a game.

Looks interesting.  I can't really comment if it works or not though.  I'd assume the developers did some of their own testing with UT3 or have some other reason to be confident to list UT3 as a supported game?  I didn't even check to see what it scans but cheats like x22, AA, Bumblebee wont necessarily be detected by a process list scan since the loader destroys itself after it loads code into UT3.