Does OpenVR/SteamVR support Oculus Rift or no Vive, in Unity?

In Unity, using OpenVR and SteamVR, does it out the box support:

1) No Vive, i.e. can control with mouse, similar to Google Cardboard (i.e. holding down [Alt])

2) Oculus Rift (ex. DK2), or is this a legal licensing issue?

Thank you in advance!


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