My limited experience on this tour (Sacramento) found an enthusiastic, relaxed, and happy MK. Same with this band. I couldn't see anything tired or listless in the performance. As always, he was magic from the moment he appeared on stage. Sacramento has a stadium sized arena, and it was nearly full, yet MK was as chatty and friendly as he has been in very small venues. (Boothbay 2006 wears the crown!) I do not see a worn out musician in any way. I see a musician whose style has mellowed and become more understated--at times and with some songs. Even though he did not play any of the old DS songs (except for SFA) there was still plenty of life. Before he was hurt in 2010, he was just as strong on the DS songs. Yes they were simplified and shortened, but still strong.
I, for one, like to see MK with this band and only with his band. I do appreciate his collaboration with other artists, but I am selfish and I want him to be the star of the show. Even so, with Clapton or another artists of similar integrity, I would still attend the concert to appreciate both artists. But, with apologies to Dylan fans, I could not sit through an entire Dylan concert anymore, even with MK on stage. I was glad they were divided. I agree that a unified show could have been aesthetically satisfying, but I couldn't deal with what is left of Dylan. Again, apologies to Dylan fans. I don't see MK as tired or worn out, and I believe that when he gets tired, he will be too much of a perfectionist and have too much pride to settle or to ask his fans to settle. A different and mature style of music is not a diminishing of music.