If your interface is in the same library as your concrete model that you'll typically want to navigate to, you could add a 'using alias' to the concrete object. 'Usings' are helpers anyhow, and this helps.
using System;
using PrimaryImplementation = YourNamespace.YourConcreteObject;
public interface IYourInterface{
}
When you're taken to the interface, you have a quick (and dirty) way of getting to the primary implementation of your interface. F12->F12!
