Remember that the Hololens is not VR it’s AR (Augmented Reality). The lenses are see-through which allow an overlay/HUD sort of view vs. VR offerings like the Rift which are meant to be your sole FOV.
I see military applications of this in the very near future.
I wonder what happens when other countries start hacking our video calls, boring as they are?
It could really spice up a meeting to get a death threat from the jihadis in the middle of a Monday morning sales meeting.