Haven't seen PoB there, as you said: he sits at the Humanoids but try with other stores there, they might have it. You can always go earlier to Gosh, they have 10% less for attendees of LCSS for all purchases.
Only he charges for everything, McLeod does it for second signature, I haven't checked all tables. Don't get me even started on this 'artist', he represents everything what I'm against.
I'm tempted to go tomorrow so I can get all my stuff signed but that might be too much for me.