Microsoft has launched earlier this year MDM management . But what if you want to use MDM & Intune. Now they both can exist on your Office 365 tenant. I have been running this since late August on my test tenant. the advantage is that you are setting two SOA (source of authorities) by doing half the work per say but it is an easy way to bypass making exceptions for users that are still using ActiveSync connections & then other users or Admins want to manage their users with Intune.
You find my original thoughts in the Community Forum