Not really an update. but I've managed to find the enhanced Turok 2 Adon model I made before scrapping it for the custom Tk3 Model. Unfortunately, it's just the T-posed obj. and not the rigged mesh, that's probably lost forever, though someone could append the rig from the Tk3 version.
It's found under TurokDooM_Workfiles/NPCs/unused/T2Adon