With the current tech there is no way Google can put in computer-vision based two-finger gesture into Glass. There isn't enough processing power in the cell ph

With the current tech there is no way Google can put in computer-vision based two-finger gesture into Glass. There isn't enough processing power in the cell phone linked to the Glass. And there isn't enough space in the Glass for a custom computer vision chip. So it is likely that you are right, and it is merely a two-finger touchpad gesture.