I just received a recording of one of the Further shows at Red Rocks; I have listened to the first of three discs. The Phil tone is alive and well!
From what I have heard so far, the energy level was pretty low... The show started off on a fun note with The Golden Road, but the next song, Cassidy, was way laid-back, especially Weir's vocal part.
Am I alone here or does it strike anyone as very strange that they have a guitarist who is doing his unabashed best to copy Jerry? And whoever sung Big Railroad Blues sounded just like Jerry, too. Personally I would rather hear them move further than backwards.