Yes, I did see Blakey; he was my idol since 55 when I first heard him. I saw him in 1970, he had on bib over-alls, and it was at a run down joint; that brought tears to my eyes. But maybe he wasn't doing bad as I had assumed, but just doing a favor for a friend.
His performance was just as energetic and forceful as it was when I first heard him in the beginning on record.
https://www.youtube.com/watch?v=Di7ko6eST40