In any case octane is still in beta. So is not yet released. And the stability of Moi beta is "unique" in the world of software.
I'm not yet an owner of Octane rendering but I'm serously thinking for render Moi object. If you have read the topic you can feel that radiance is doing all the possible for solve the issue. Autodesk had problem in importing OBJ files for YEARS, and after just include in their package the Guruware Importer. THAT'S NOT SERIOUS!