Yes, although worth saying that the Vive is using timed laser pulse detection on the headset and handsets (the dimples are the light detectors) and Vive wall emitters are simple spinning time-encoded light beams, while the Oculus Rift sensors are literally like web cameras very similar to TrackIR - which is why they need all that USB power/bandwidth.
You can use your Rift as a source for TrackIR using Opentrack, i.e.
You could theoretically wear the Rift up over a cap (i.e. not looking into the screens) and it would work fine (maybe). Easy to try…