How did you convince management to let you use Clojure? Some of the devs where I am are interested, but I suspect management will be quite hesitant to embrace a new language.
We did have a big meeting with all of R&D where we talked about all the pros and cons. Hiring was a big question early on although it's still my belief that using Clojure rather than Java is a positive in terms of attracting good programmers. I don't think we have enough data to answer that either way though.
I think that most important part was that we weren't betting the whole company on it. We were only betting a few weeks of developer time. If it didn't work out then the worst case was rewriting those services back into Java (in fact until recently we had a single Scala service from a previous experiment). Quite a few companies start off by writing some internal tooling in Clojure as an easy to stomach first step. That may be a good path if management are resistant.