I was just considering advocating within my employer (Cloudant, i.e. clustered-CouchDB-as-a-Service) to back Loïc too. CouchDB is still stuck in the past with Mochiweb, and while switching that out for Cowboy 1.X would be a nice-to-have, getting our hands on a stable release of Cowboy2 (i.e. "the HTTP/2 version") would let us optimize Couch's replication story immensely. I've just been trying to set up a single trivial Event Stream HTTP/2 loop_handler with the Cowboy2 master, and it's really just not there yet, so we could probably give him a push.