we can all check it out ourselves now from the comfort of our own home/home theatres, the Sony Japan MultiCh SACD set has the whole of the Lotus Quad in discrete form, from the 4-ch master tapes, for the first time (plus bonus material newly mixed from multi's).
jolly interesting to compare the 4-ch presentation on those Sony Japan MultiCh SACDs to my own SQ LP decode through the Surround Master, I found the SQ decode to have more surround activity than the discrete rendition, which I was not expecting!
ultimately, perhaps the Airto/Deodato SQ decode on this new DV SACD will similarly potentially have more surround activity than the now missing 4-ch master? perhaps not!
I imagine somebody here who has the Q8 of the Airto/Deodato live Quad would be able to say either way as and when they have the opportunity to make a comparison. until then its just speculation on my part about this Airto/Deodato live Quad material, I have nothing definitive on the matter.