[pjmlp]

On iOS front, there are a few native code compilers available for Java, like RoboVM and Codename One.

On Android, there is the issue Clojure is still a bit fat and uses too much reflection during startup. ART might make it harder as it is a AOT native compiler.

On WP, there are currently no efforts for Java support, other than maybe via ikvm.net. Or Clojure-CLR.

[Flow]

Tried compiling Clojure->Scheme->C?

[pjmlp]

Not yet, but the Clojure->Scheme and Clojure->native(LLVM) do look appealing.

However I tend not to like having layers between language and final execution target, as it increases debugging headaches.