That would be amazing! Can you invoke command line scripts from LT? If so you could just use our included REPL client implemented in Ruby. Otherwise you'd have to port it to ClojureScript, but the client is designed to be simple enough to make that easy to do.
Yep, though it's not as easy as it could be yet. The best way currently is to write your own command leveraging our spawning APIs (a thin wrapper around node's child_process module with some extra cljs sugar).