Update - Bought a 5D II out of fear that one of my 5Ds was malfunctioning (possible focus issue). It was probably a fluke and it did not show up during my last wedding. My 85L is in the shop again for focus issues also as a result of that same concern, but it was definitely backfocusing.
Will have it on Thursday sometime, a day after a night wedding and 3 days before my next e-shoot. I hope my spare batteries arrive promptly (already got the extra 16gb CF card).
I hope it is worth it and is a good camera. I played with one before at PMA, but that didn't tell me much except that the viewfinder was slightly larger and the file size is massive. If I don't like it, I may just resell it locally and recover my costs - it is by far the most expensive camera I have ever bought and is going to have to live up to some very high expectations to justify the price. Ergo, it had better come through in those dark situations where I need more light than my 5D allows for. I am probably going to enjoy the video function for personal use, and live view should be very useful for macro and any portriature I might do in the future.
Two things continue to bother me: Increased noise/banding in low ISO shadows according to reports, and a multitude of highly skilled wedding photographers who say that the color or contrast is "not as good as the original 5D."