As easy to use as Trello for small teams, but scales up as you grow (although we probably cap out at 100-ish devs right now, not quite to Jira's level yet.)
(Full disclosure: CEO/Founder)
We deploy multiple times a day right now. Clubhouse is built with the option of a hosted version in mind, but we'd have to get to the point where we felt that things were stable and complete enough to say "ok, let's call this 1.0 and ship it."
I just requested a beta invite. Glad to see other businesses built on Clojure codebases!