A few updates on this one, with USD in Toolbag 4.06 this is now easier. 1. You can export a copy of your scene as USD and import it into another scene 2. USD supports all of the light types in Toolbag, including the Sky 3. If you export USD, the sky HDRI image will be saved out - useful if you need to extract the sky to…
Thank you very much for the reply! I already knew about creating a template scene, but merging scenes was actually what I was looking for. Anyway, looking forward to the next Toolbag update :)