Hubert A. Le Van Gong of Sun has a flash demo showing how a user-centric identity system can be built now using existing specifications from the Liberty Alliance. The demo shows some clear, user-centric behavior. You could nit pick about the applet and whether that's the best client, and so on, but that's not the point. The point is that user-centricity doesn't have to be "anti-Liberty" as some suppose. Liberty can be used in a number of ways. The real battle is educating companies in user-centric ideas so that they can employ them in their federation--regardless of the technology underpinnings.