SteamVR supports the rift natively and due to some issues with the OculusSDK (and the fact I don't need anything from it) I tried turning off the oculus plugin, which works to some extent except that it renders the cameras as if they were at IPD 0, IE the world looks big and almost in mono.

Repro steps:

Start new VR template project, turn off oculus plugin. Restart project. Play "motioncontrollermap". The tracking will work, and so does input, but the rendered images are wrong.

Same steps works as intended in 4.17