My copy turned up this morning, fast delivery to the UK, ordered directly from Mike Keneally's website. I haven't managed to listen to it yet, just read the blurb in the booklet.
Incidentally, if anyone dives into this 5.1 mix without reading the booklet first, you should know that the multis are missing for "Looking For Nina", so that one songs has a faux surround mix made from a stereo mix.