As much as I like the idea, I don't think it's going to be that mainstream of a thing due to the cost. When you effectively double the cost of gaming, regardless of the platform, by using VR, it's going to be a tough call for most players, and I honestly don't see them jumping in.
And the problem with Nintendo's approach is that if VR happens to blow up, they're too late to take use of it anymore, so IMO it would probably be better to be looking into getting on the second wave of VR for them.