>>367880008
Last I saw the Haitora trackers, which I'm guessing these are based off, gave garbage tracking in VR itself. They worked better than kinect (slightly) but nowhere near as good as Vive trackers.
Those were a very much hobbyist project so maybe these are better now but I'm doubtful. Also all the wires seem like they'd be incredibly annoying when sitting or lying, or under some covers or something.