@martinbean haha, yes Twitter, that trusty source of reliable news and documentation!
But seriously, Forge gets a mention on the home page for Reverb and was mentioned at Laracon EU as supporting Reverb - Vapor is conspicuous by its absence.
The lack of documentation on how Vapor would handle Reverb does raise questions on my end too since it's given a section on Forge's documentation. Considering the setup required to get Reverb running on a Forge server, I can't imagine Vapor just handles setting up the environment variables and configurations to route websocket traffic to the Reverb application without it being given some documentation in the Vapor docs.
I would love to be proven wrong though, as I'm going to need to set up Reverb on Vapor.