Does mosh save bandwidth?

[The mobile shell](https://mosh.mit.edu/) claims many benefits, especially with mobile connections. Many mobile plan prices scale with the amount of data transferred. So I wonder whether I can use Mosh to cut down in data usage. [A tutorial on DigitalOcean](https://www.digitalocean.com/community/tutorials/how-to-install-and-use-mosh-on-a-vps) states that > Mosh [...] will only communicate changes to the currently visible screen area. This allows it to radically reduce the bandwidth [...] But does not give any statistics on how much bandwidth is gained and whether this really weighs out the additional overhead of establishing and maintaining a connection via UDP. Are there any tests, experiences that compare SSH to Mosh in real-world-scenarios, especially - used with _screen_ or _tmux_, - on a mobile connection while moving between different connection modes or cell towers, - for long-lived sessions?