Thanks! I developed the frames in Camera Raw, and sharpening is part of the usual routine. I also added a 'sharpen for screen' to the output settings. The sharpening enhances the aliasing too, ofcourse, but in my not-so-interesting first part of the clip you can clearly see how bad it is. Also see the leaning flower in the ISO tests.
'Not usable' I think is very individual. I publish for the internet, and the moiré was there already on h.264 from the Mark II, so its no sudden surprise. Compare it to the Mark III, and then its suddenly 'not usable'.. you can fix some (color) moire in Camera Raw, the aliasing seems there to stay, unless you shoot in crop mode.
I think right now the biggest hurdles for the Mark II is the 4gb limit and the resolution limits. Sound you can do externally.