Here's an note summarising my experience trying to connect CIDER -> Catapult -> Drawbridge https://github.com/clojure-emacs/cider/issues/39#issuecomment-597684479

tl;dr: I'm still waiting for a prompt in CIDER. Possibly the root cause of the slowness is the issue described here: https://github.com/nrepl/drawbridge/issues/10

I'm also having trouble connecting Drawbridge -> Heroku on HTTPS.

https://github.com/nrepl/drawbridge/issues/43