Has anyone federated NAM with ADP Workforce Now?

I have a site that wants to do federated SSO with ADP Workforce Now using NAM, but since NAM is not on their official support list, they refuse to work with it (they have a very short list).

I thought I had heard others federating between ADP And NAM, but maybe I'm mistaken?

They want us to setup ADFS, which I think is ridiculous and unnecessary.

If anyone has done this and has a contact at ADP, the would be much appreciated as well!