Yes. The uno output is a URL which can be added as a browser source in OBS. OBS supports multiple browser sources and therefore multiple uno outputs. Have at it! In addition, dock and control any uno inside OBS. Learn how to Dock uno in OBS, here.
Not using OBS? No problem. uno outputs are compatible with any streaming software that supports a browser source.
You can also use the uno ouput in key/fill workflows. Customize the output url by adding: ?bgcolor=green or ?bgcolor=rgb(0,255,0) to the end.