PrimeGrid's GPU test apps

Is anyone testing out these?

http://www.primegrid.com/forum_thread.php?id=1737

I think this is still in early stage, but if it works, it should be a great boost in performance! :)

EDIT: Hmm... Think the thread is older than I thought... they are actually already part of the project's apps list, so they should be working just fine although only for Linux and Mac OS. So the question is... is anyone working PrimeGrid's CUDA apps?

EDIT 2: There is a Windows app in the thread above, but I guess it's still under testing? It didn't make it to the apps list yet.

Running this on my GTX260, alternating with Milkyway, Collatz and DNETC (Though I will leave the Milkyways now for my HD3870, which crunches them faster:icon_mrgreen:).
As added bonus you also receive CPU-only WUs, and I just discovered a seventeen-or-bust WU of 1058 HOURS!:icon_twisted: To be done before December 20th.:icon_santa: