I tried some weeks ago, but did not get the X to start at all. There were several missing dependencies which I had to ignore when installing. Also it seems that the developers of Cordia themselves do not have a hardware (Nokia N900) to test Cordia on the N900, so the packages are just built, but...
So, maybe it's you, who will join the deveopers in the testing phase and help to bring Cordia to the real world outside the SDK