If I was starting a company - Clojure. If I was looking for employment - Python. Clojure lends itself very well to data processing and data science, but the data science ecosystem still isn't nearly as strong as Python's is.
And if you want to mix them, you can try hy (http://docs.hylang.org/en/latest/): a lisp that compiles to the Python AST, allowing you to reuse every Python module under the sun.
I'm currently quite deep into Javascript/Node, and am already comfortable with functional programming. Next I'm looking to gain more data abilities, and had assumed Python would be the natural next step. You're making me wonder whether Clojure would be a smarter step, though I am concerned that most of the jobs still appear to be in Python.