It is. I bought a Beam with my Airs. The screen fills up the entire FOV, which is great. The problem is that there's a lag between head movements and the glass

It is. I bought a Beam with my Airs. The screen fills up the entire FOV, which is great. The problem is that there's a lag between head movements and the glasses adapting. That means unless you stay very still, there will pretty much always be a part of the screen that's not visible. Furthermore, the lag is (to me) really bothersome. I sent the Beam back and kept the glasses.