Sorry man, nothing yet. Haven't managed time to build the setup to test it.
To test this setup, I have to:
- Build a Gluu server with passport.
- Build a RP / SP which will have protected resource
- Build another Gluu server as "remote IDP" authentication.
- Make sure they do SSO properly.
- Wait for 2 days
- Renew passport related keys and re-do test.
I'll definitely jump into it as soon as I get some time.