Lots of iPads at BarCampBoston, just not mine! I wanted to test it out as a note taking device. But I also have to give a talk about teaching 6 years old to program, and Scratch does not work on the iPad. So I had to bring my Macbook Pro instead. People were using the iPad, first and second generations, as note taking devices. At least one speaker was using it as notes for his talk, but at least in sessions that I attended, no one is using video out from it to give a presentation directly. I certainly think that is very doable. In fact I am looking forward to trying it out in small meetings myself.