As I said to George today, there are plenty of orchestras playing Beethoven's 5th or whatever, but if no-one else is playing these classics (C'mon, Bananas, Spunk, MAC...) then the world is IMO a lesser place.
And given how the band played them last night, I would defend their right to do so. If and when George gets out there and plays any or all of them, we gotta choice. I will be happy to see, hear and enjoy both!
And as for whether the musicians played on the original recordings, I suspect Deke was always a bit peed off having to play 'Bananas' at every gig!