Got mine today and have listened once to the surround mix all the way through. Not going to vote yet, but this might just be a "10". I love, love, love XTC and the Dukes, discovered them both almost exactly 20 years ago while I was working in a record store, so I am intimately familiar with the original mixes. If you have any fears that SW might not have been able to recreate the feel of the original and that there would be important elements missing, then...have no fear! It is a brilliant mix, so good that any surround fan should have it for the mix alone.
On another note, I just found a sealed copy of the Doors' Perception box set for a very good price. I know opinions are mixed on the surround mixes, but for the price it was a no-brainer.