I'm trying it now. A more thorough test would be to run 2 machines against different pools, but I only have one.
I'm going to run for 3 days n change to compare hardware errors and estimated hash rate. Hopefully P2P blocks
during this time and I can give est to actual earning results as well.

preliminary #'s

3days @ eligius DH% 0.788% DH%5m 1.028% 942.79GH av
5hrs   @ P2Pool DH% 1.075% DH%5m 0.806% 947.15GH av (p2pool current reported hashrate 1.91TH* I've seen the as low as ~200 durring this test 0% DOA)