Socket.IO Server-Server Communication

We are using Socket.IO to communicate real-time statistics to connected browsers; however due to the architecture of a system we are building we want to allow both browsers and other nodejs servers to subscribe via Socket.IO for statistics. Would it be possible for me to create something like a custom transport for communicating via TCP to another Socket.IO server that had subscribed?

We want to continue to use Socket.IO's built in support for channels and subscriptions, but provide server-server via node.

Thanks for any suggestions!