Well, regardless of method, VR/3D display is not supported by FSO. The rendering pipeline simply is not there. Moreover, it's likely not going to be there any time soon. VR/3D display solutions are, as you have noted in your OP, expensive. So since there is so little accessibility, coupled with there being myriad other things with much higher priority for the SCP, unless someone who can afford the equipment and wants to code for FSO gets a real bee in his or her bonnet to make it happen, we will not be seeing VR/3D display out of FSO any time soon. But you don't have to take my word for it. Source Code Project members will tell you the same.