He's past his best but I'm sure he can still put on a great show even with just an acoustic.
I attended two of the 2015 RAH run and he was still able to entertain.
Just that when soloing he wasn't that high he used to be until the 2010 area.
These are probably my goodbye attending Eric performing live.
I don't want to witness an over diminished Clapton and the 2015 shows sounded the right time for me to get off.