Coffeebeans - smart to use?

Not sure if inline coffeescript is smart. Has just learned why inline javascript not is smart, so I don't understand why it now should be a good thing with coffeescript.

On the other hand: I find the ability to use it when responding to JavaScript (JS) requests very nice, so I wonder why this is not an standard option in Rails 3.1.rc1? Will this come i future releases? Will it therefore be smart to start using coffeescript in JS requests with the Coffeebean gem?