A quick update:

I traded some messages with Wiktor today, but he said he has really been too busy to get much use out of of the X5000, and he was thinking of selling it.
He has not tried too display HD video with it.

I asked him to give it a shot, if he had the time.

Maybe we should have just asked for further PPC Mac support...

I'm still planning on buying the X5000, but part of that will primarily be to own a piece of history.
A 64bit Qorlq based AmigaOne, that runs both PPC NG Amiga operating systems. Now that Freescale is a rapidly fading memory...