A benefit to using the currying style is that you can do work in the intermediate steps and use that later. It is not simply a 'cool' way to define functions. Imagine a logging framework:

  (log configuration identifier level format-string arg0 arg1 ... argN)
  

  ;; Preprocessing the configuration is possible
  ;; Imagine all logging is turned off, now you can return a noop
  (partial log conf)
  ;; You can look up the identifier in the configuration to determine what the logger function should look like
  (partial log conf id)
  ;; You could return a noop function if the level is not enabled for the particular id
  (partial log config id level)
  ;; Pre-parsing the format string is now possible
  (partial log conf id level "%time - %id")