Can someone shed some light on where Ambly would fit into the development workflow?
If you would like your JavaScript to be derived from ClojureScript, and you would like a live REPL experience, then Ambly can be used for that.
An example library that uses this technique to drive a native iOS app is https://github.com/mfikes/goby
Ambly can be useful in other situations where you are not building a React Native app, but still want ClojureScript driving things. For an example with Ejecta, see http://blog.fikesfarm.com/posts/2017-04-29-clojurescript-eje...