Working example of Rails 3.1 + Juggernaut Instant Messenger?

Are there any decent example apps for an ruby on rails 3 instant Messenger app based on any of the publish-subscribe messaging system Juggernaut?

• 1-1 chat with method of adding 2 users to a "conversation"
• Ways to protect the 1-1 conversation to only visible to those 2 persons in it
• basic frontend implementation

Here is an example which might help you:

https://github.com/maccman/holla