The custom proggie that I use decodes into multichannel .wav files which include an LFE derived from the surrounds. They are done by reel as you know with your own experience with these discs. I believe only 1 person has received decoded files from me in this configuration. At present he has not listened to them yet as they are finalizing their video end before going in to the A/V synch stage.
He has explained to me that when they get there they will update us all on the progress.