Yeah I loved it in ED, was shocked by how good it is. The popularity of EDTracker and similar devices speaks volumes for how much fun it is. It felt very similar in SC even when it wasn't officially supported but someone managed to find a tweak to make it work, it was a bit buggy but still worked.
PaulC2K - TrackIR isn't future tech, it's been around for years as have most of the free alternatives. with triple 1080UW you have the horizonal FOV covered but not the vertical and not the Z axis, with head tracking you can look around, lean forward, lean back etc it allows you to look more closely at screens in games and even put your head around objects (Euro truck simulator - put your head out the window when reversing lol)
Until you try it you won't really grasp how much of a game changer it is and it only gets better the more screen you have to play with.