FREE MacOSX Antivirus

I stumbled across this website yesterday while reading one of the stories of an Apple switcher. ClamXAV claims to be a 100% free virus checker for MacOS X, based on the known and tested ClamAV back-end developed as an open source project. Ever since .Mac stopped giving out Virex for free (and since the newest Virex is not MacOS X 10.4 compatible) I have been looking for a low-cost replacement. Have any of our Mod-Blog readers used this software? I'd be interested in any personal reviews or impressions.