Eric Willman's implementation of his own C# binding specification can be found in his GotDotNet workspace at www.gotdotnet.com/Community/Workspaces/Workspace.aspx?id=2a1ac9b9-4455-4157-9473-3a7fae0ee05a
At the time of writing, a beta-release is available from the shared-files area of this workspace, but only to people with Microsoft Passport accounts (which I don't have) so I've not been able to fetch it myself.
I understand that Eric will soon be publishing a proper release in the releases area.