I did a bit of RHS with Dizzy on the Memphis Belle film (flying the B25), and he was great fun to fly with. Full of stories, helpful, and capable of some fairly strong opinions on things you aren't supposed to talk about these days! I probably learned more in a few days with Dizzy than a month with anyone else I have flown with. He was particularly enlightening when you got him started on the subject of Spitfires, as I recall.
As others have said, very good hands indeed. He will be missed.