Saving calibration state after calling ovr_RecenterTrackingOrigin

Ingame I can call ovr_RecenterTrackingOrigin and this works, but it is not saved or made persistent when running my exe a second time. In fact, my controllers (including the Oculus) are recreated at every ingame heat, and this keeps resetting the Oculus calibration position.

I can only change this in a persistent way by calibration inside the Oculus Home screen. I would however like to be able to make the calibration persistent also from within my game. I could check and save (on disk) the calibration pose after calling ovr_GetTrackingState() after having called ovr_RecenterTrackingOrigin(), but it seems silly to have my own calibration matrix on top of the Oculus provided one.

Any idea how I could achieve that?