There's some mention of clojure being used as a scripting language here that can be invoked with a shebang - does anybody know if the way this is done is any di

There's some mention of clojure being used as a scripting language here that can be invoked with a shebang - does anybody know if the way this is done is any different (performance-wise) than compiling a leiningen project to an uberjar? When I've tried using clojure for really simple things, like a "Hello, World" program, and compiled this to a jar to run with something like "java -jar hello.jar," the time it takes to start up the program is pretty abysmal. I'd like to use clojure for something on the Raspberry Pi, but it can take about 30 seconds to run "Hello, World!" Any secrets to getting it to start up faster, or am I just stuck?