At our company, we use Federated ID access, but it is still possible to gain access via a personal device, in certain instances (via mobile for the Mobile Dashboards), because of how our security is set up. At the very least, I would recommend working with your TAM or your Adobe Account Manager to get things configured the way you want it. Managing access can be tricky sometimes, and it may take a little time to get things worked out.
Jeff Bloomer