Can't do obs on a demo.
Not entirely sure I can do side-by-side unless I set up the video in advance. I'll see what I can do, though.
Basically we'd all get together and start the demo old-school style, and then we'd talk about it on Mumble. I'd broadcast basically everything being said in Mumble. I wouldn't necessarily be commentating it like an Observatory episode, but I can definitely host the stream for something like this.