Wow, I'm actually impressed if that's how good it seems it will be to use.
Looks like a whole different game in terms of immersion too.
Now, they just need to add the ability to track headlook to inputs like trackIR and it would be amazing, but that won't happen. Even with stuff like occulus.
In fact, I bet occulus would work on it but TrackIR won't, a step backwards.