Ice Coffee Script vs Promises/A (as I've understood it at least)

iced.coffee

search = (keyword, callback) ->
  host = "http://search.twitter.com/"
  url = "#{host}/search.json?q=#{keyword}&callback=?"
  await $.getJSON(url, defer(json))
  callback json.results
  
search "hello world", (results) -> console.log(results)

promise.coffee

search = (keyword) ->
  host = "http://search.twitter.com/"
  url = "#{host}/search.json?q=#{keyword}&callback=?"
  $.getJSON(url) # returns a promise

promise = search("hello world")
promise.then (results) -> console.log(results)

I prefer the straight ahead promise approach