iThink this rox
All technologies have their issues, especially as it comes to this generations version of Holograms, etc.
Google Glass is quite limited and doesn't compare. VR helmets are cool, but try walking around your home with that on your face, unable to see "through" it.
However, if my only TV was via the HoloLens, then no one else visiting me would see anything - ever.
This HoloLens is the best tech I've seen that at least may (based on developers triumphs), be best-of-breed whereby future versions have no limitations.
It is version 1.0, but augmented reality is much better than virtual reality IMO - mostly because I can still see the world around me while viewing my virtual world overlaid on it.