Getting a 'hang' of clojure as a language is quite easy, my colleague and I took only two weeks to jump into things. Even today, specific code development is order of times faster than we can do in Python.

However, lack of general 'all-purpose' libraries for numerous use cases means we have to implement that API or library in a general way (if only for our use case) then integrate it into the system.

This approach has worked quite well, creating our own template code (as everything is functional) helps reuse across many projects, however the initial investment of time/labour is something we would like to avoid for the sake of finishing the work fast.