To add, it's not great at the moment and will be more confusing until Clojure/ClojureScript 1.7.x is the minimum supported due to the introduction of reader con

To add, it's not great at the moment and will be more confusing until Clojure/ClojureScript 1.7.x is the minimum supported due to the introduction of reader conditionals (cljc), as they're not backwards compatible. Cljx is the old method that cljc should obviate, but there'll be a transition period. I work for a SaaS/PaaS company using Clojure internally for 2 years and was looking into making a universal client (jvm, clr, js, ios, android)... I'd surely have used a Cljx core with Lein profiles for each platform prior but now it's up in the air, may still have to go that way if we're supporting older Clojure. Each approach on its own is easy, but now there are two and the unofficial one (cljx) is more widely supported than the official one (cljc).