How can I open Service Bus with a wcf service to be used by the silverlight client

In a Silverlight application, instead of messaging and messaging (wcf) around messages that are finally sent to the bus, I want to use my message bus as directly as possible.

My idea was to expose Service Bus itself as a wcf service, or in other words I want pub / sub bi-directional over wiring.

Is it already done? Is bi-directional compatible? At the end of the day, we are (will we be limited to this?) In the http domain?

Lots of questions. Some start will be greatly appreciated!

I am in a .NET environment using Rhino Service Bus, but the pattern needs to be applied across different platforms.