I'd like to know who, but you can count me out, at any rate.
I've debated Henry Morris, Walter Brown, and Duane Gish, although it's been a while now. I've still got the poster for the first one, which has an adaptation of my statement to the organizer, "Although I am in profound disagreement with the aims of today's Creationist movement, I recognize their fundamental right to hold and express their opinions."
That was in in 1986, dear friends!