Pretty cool, but my first thought is: how authentic will communication be when "holoporting" to each other if you both have those big hololens mounted on your head? It will be hard to pick up on each other's facial expressions and impossible to look into each other's eyes.
In a generation or two they'll do facial tracking. I imagine you'll get a full 3D model made of you, and it'll pick up the facial movements and transpose them onto your avatar
And here's a good example of the relatively high fidelity (marker-based) tracking that's happening in real-time: https://www.youtube.com/watch?v=OdQpJgLs51w