I'd be VERY surprised if the 1Ds-MkII turned out to be a dog.
I don't think there's any chance at all it's a dog. I do, however wonder if it's worth selling a 1ds (for around $4500 or less) and buying an MKII for $8000 or buying an MKII for $8000 rather than buying a used 1ds for $4500 (right now) or probably much less in a few months. My main doubts are for landscape photography where you'd be shooting a lot of wide angle and never shooting high ISO. Until I see some very clear test grid comparison shots, I'll keep doubting that the real life resolution improvement will be worth the big expense. If I could actually get something like 50% improvement in resolution with real life lenses available today, I'll start saving my pennies and re-arranging my priorities.[/font]