Well, now that the thread's been bumped ....
I finally got to watch both the theatrical and extended blu-rays this past week while housesitting for my relatives who have a sim2 1080p projector and a huge screen.
Now, I must preface this by saying that I do not know whether this projector has been calibrated (I intend on asking my uncle). The DNR settings are definitely turned off, as I could see the fine grain on titles like Minority Report. Seeing as how everything was professionally installed, I would guess a calibration happened as well.
Anyway, the FOTR extended blu looked gorgeous to my eyes. I didn't find the color timing distracting in the slightest. I'm not noticing a blanket tint. I'm more and more convinced this is how Jackson and Lesnie meant for it to look. Most significantly, the luminance of the image hasn't been badly affected. Even shots I remember looking dim in screenshots (Gandalf approaching Isengard on horseback), had a nice dynamic range.
The only scene I noticed looking significantly different was Caradhras.
We have to remember that only 70-80% of the movie was put through the DI process originally. Even with this finished DI, they might've wished to go back and change the timing of certain scenes further.
Oh, and I was pleased to discover that the easter egg 4-minute preview for The Two Towers can indeed still be found on disc two of Fellowship and is now in 1080p! None of the reviews had mentioned it and I'd been kicking myself for selling off my dvd's. I love that trailer!