animating hand mesh using XR Rig?

Wonder if anyone has experience of using the Model section under XR Controller script on the LeftHand/RightHand Controller of the XR Rig? I was hoping it may be possible (as in easy) to use the animated hand mesh from the old Oculus package - tick on Animate Model and it all works    :D 

Currently only supporting Oculus Rift, I just really want animating hands in. Any help, documentation or tutorial links will be appreciated. Thank you.