They didn't even allow photography so I dont think anyone got sketches... They had prints available of various pieces of art and movie posters. Paying for those would get a personalized signature. You got 1 free autograph and $10 per item after.
I have heard he can be very chatty but they kept the line like a conveyer belt to make sure everyone got through the line in a timely manner. It was still very very awesome to meet him, finally.
I did get a picture with George Perez though!
And autographs from Greg Capullo, Perez, Joe Benetiz, Chad Hardin, Peter Steigerwald and a couple others.
Also, my friend Mike hooked me up with his TMNT covers.
And I got the sketch cover for $10... much better than what it sells for on eBay.