Duncan was a little hard-to-find at the show, all tucked away in the back sitting w/ Joel Meadows of Tripwire magazine.
I stopped by a couple times, before finding him back there and he gladly did a nice sketch for me.
It was good talking with him and I wish I'd brought along my copy of Vertigo's "Face" by him and Peter Milligan to get signed.
I thought it was a great, suspenseful comic that had me turning each page to find out what happens next right up until the end. Excellent stuff.
He also had a Jay & Silent Bob piece or two for sale, but he was mostly there for meet & greets and some commissions leaving the original art sales to his original art dealer.
http://www.human-computing.com/Tripwire/index.htm