There was a test clip posted here. (right click to save, otherwise browser may try to play with qt plug-in)
Overall all it looked good, but there is no telling what the source was. My main problem with the video was the scene where everyone was grabbing their skis. There may have been some degradation, but if so how much? No way of telling really without side by side comparison with source material.
Anyways, there are test units out there right now, so it's just a matter of time before screen shots start showing up.