Does Christopher Walken sign/talk at the stage door?

I can't vouch for what he does at the stage door, but I was at "God of Carnage" two weeks ago (one of the rare evenings I semi-regret and wish I'd chosen another show) at the "Behanding" theatre is just up the street.

We heard a loud cheer from the very large crowd when he came out and he seemed to get into the limo within a couple of minutes, so maybe's he the random signer/picture taker type rather than signing for everyone with a waiting Playbill.

On reading the title of this thread, my first thought was - how kind of Mr. Walken to accommodate his deaf fans!

I was wondering: has anyone has tried the stage door after a matinee? I'm thinking about trying to add this to my trip, but it would be a Wednesday matinee. I'm just curious as to whether or not anyone knows for sure if the cast sign or just ready themselves for the next performance. Any help would be great.