I have been wanting to learn a client-side MVC framework (leaning towards Ember.js), but now that I have seen this I am wondering if I am better off just using a WebSockets Ruby gem.

I know this might not be the 'typical' HN question...but if I ask this question on any of the forums for the client-side MVCs, I am likely to get a skewed response (obviously).

I asked on Stack Overflow - http://stackoverflow.com/questions/12359978/to-build-a-very-snappy-rails-app-js-mvc-or-websockets - but because this is more of a 'discussion/debatable' question, the mods thought it wasn't a good fit.

So I am hoping that some HNers that have experience with this stuff can shed some light on which might be a better approach for me....along with the pros & cons for each.

Thanks.