True, they are indeed different things but TrackIR will just be that bit easier for people to lay out dosh for, that's all. I have TrackIR and yes, once the Oculus goes full product release I'll be buying one of those too. Tis why I said, "support both" my friend.
They are both great bits of kit and deserve to be supported if possible. I didn't mean it to sound like I was slamming down on the Oculus. We are at a time when we need VR and more immersion, the Oculus is the best thing out there currently so I'll be supporting it as well.
I think as soon as you have head look, you can have API hooks and implement drivers for OR and TrackIR quite easily.