> But it seems it's not main-stream [1] enough to have tons of tutorials, books, tools, employees that would appreciate it.. yet.

My "Clojure Books" folder contains 10 books. Several more came out recently, but I stopped buying the beginner ones.

How many more do you need?

> I just don't want to spend my time learning something that could become obsolete, (in the eyes of coworkers/employers!)

As Master Yoda would say – "I sense much fear in you" :-)