Not that I'm aware of. I've only gone to three expos (two AEEs and an Exxxotica) but I've never even seen a Streamate booth there... amusingly some of SM's whitelabels do have booths, though, and merch as well.
(I bring up the expos as those are the only times I've gotten merch... well, and at the model meetup parties that MFC throws, but those are during expos.)