yes yes, as long as it gives display it obviously worked
"Worked" is all relative - for a $150 and a couple of days mucking about I've got about the same functionality (plus fan noise) that I had back in 2006 with an off-the-shelf GeForce 7300XT.
So I'd say it's a work in progress - the potential for future progress on better 10.6.4 compatibility making it all worth everyone's work.
-Steve