I went to 4 shows : Barcelona, Bordeaux Paris and Lyon.
I clearly see a big difference between Barcelona and Lyon. Slowly and slowly, if you look carefully, you can see John Mccusker playing same as Mark as a 'support', just like if Mark wasn't able to play full song or some guitars.
That's the case for Romeo And Juliet and some others. John is like 'doubleling' Mark. I have noticed it a little bit in Bordeaux, but really clearly in Paris and Lyon.
I have also noticed that Mark is playing really better when he's sitting (My Bacon Roll for example). I think he has an issue with back or hip, and it make him difficult to play standing.
The question is : why not playing sitted, like in 2010 if he feels more easy ! That's no problem for me !