Saw him last night in Sheffield. It had to be a cloak and dagger affair with the venue only being announced to the audience via email the night before. This was due to the CAA campaign against anti-semitism managing to get many of his events cancelled. Israel was not even mentioned in his talk!!! It was a powerful and wonderful speech and I'm sure you Greg could get even deeper with him. He seems a really nice guy as well, which is a bonus. Go for it.