What is troubling about AR/MR which I feel a lot of people overlook is the limited FOV. From the demo videos shown by Magic Leap (and Hololens) on YouTube it feels as if the entire FOV is available, which is barely the case - the Hololens has an FOV of 120x120 and Magic Leap is said to have a lower angle than that.
Verge covered Hololens and they mention [1] the FOV as a limitation.