The opposite of my experience. I have many more years of experience and am far more familiar with in the target language than Clojure. But for the really difficult computational problems, say, for example, particular performance analysis of a sensor network for a given time series, I reach for Clojure.
Same. Clojure is very, very good at expressing data and data transformations in a simple, concise way. Once I learned to reason in Clojure, it quickly became the language I prefer for playing with a fuzzy problem.