But, when I play games, I frequently want a very relaxing activity, and the Vive doesn't do that. So, interesting.
But! As a (former?) AR professional, holy shit the non-gaming applications for AR/VR. There's overlap and synergy for applications in both mediums, and then there's the overlap on the technologies (particularly authoring tech - I'm looking at you, Unity) that go into them.
Basically, if I wanted to be a "real" AR developer when AR is ready, I'd start by becoming a real VR developer now.