When we tried it, gather.town set an awkward expectation that team members had to stand at their virtual desk, otherwise they weren't _actually_ online / working.
In my experience, this expectation gets set either way. Whether that be a green light on slack or having your video on for all calls.
It was like those flash/java-applet 3D navigation interfaces for websites that were semi-popular for a few years, way back: cute, but just made everything slower and harder.