I already do this - quite regularly in fact, using my DK2 (and plan to do the same with my CV1 when it arrives in May).
I position a chair for my 'VR passenger' out of the way of my desk, pc monitor and HOTAS and position the Oculus IR camera to suit the chair. I'm only talking a couple of feet away from my desk. I hit F12 to center up the HMD for the person in the chair and I fly the ship from my desk whilst using the pc monitor. I very occasionally have to ask the person in the chair to 'look left or right' if I need to see any of the control panels but other than that - works well. Even when the passenger looks around I can see all my main flight info (radar, shields, fuel etc) as field of view of mirrored image on monitor is good. I have shown the kids and their mates some piracy action, docking and un-docking, SC, FSD jumps, debug camera views of the galaxy - inclu. galaxy map and even took the missus on a trip from high orbit down to the surface of a rocky body for some canyon runs and SRV action. I dont recommend any HIREZ/HAZ RES action tho - as things can turn nasty very quickly (your choice of course!).
this method works well for showing 'passengers' ED in VR whilst 'in-game' with me flying my ship in normal 2D.
My big plan would be to have my DK2 on one pc and have my CV1 on a 'new' pc - so me and my son (or one of my mates) can play in VR together crewing the same ship (multicrew) - all in VR
CMDR Blastard