OAR Converter presentation at the OpenSimulator Community Conference 2017… YouTube: OAR Converter Presentation [25:51]. More details on OAR Converter at https://blog.inf.ed.ac.uk/atate/oar-conv/.
The OAR Converter Expo Booth on OSCC Expo Zone 3… hop://cc.opensimulator.org:8002/OSCC Expo Zone 3/101/58/26
Ai Austin Blog 
In response to questions at the presentation, I contacted Fumi Iseki and he responds…
a) The Unity SelectOARShader.cs plugin is for selecting appropriate shaders. If shaders are not used on Blender, the OAR Converted Collada files are readable directly on Blender.
b) OpenSim Var region OARs can be handled.