The only solution that comes to my mind is just passing in the various c.loc variables from the controller. But this seems unnecessarily ugly when you consider having to send in stuff like 'Hello', 'User', etc. An example would be updating a user panel to replace a login button with "Hello username!"
Well, that or using a js I18N plugin. but i'd like it to be handled server side. Somebody humble me with an overly simple (and obvious in hindsight) solution.