From what i've heard (can't exactly confirm personally right now) the experience is like what you experience in real life. It isn't like 3D where you are missing out on the entire point of the tech. You are still in a world that pretty much envelopes you, responds to your head movement, and with the room scale stuff allows you to walk around and interact with some approximation of your hands. I myself apparently have a lazy eye that wasn't corrected, so I'm pretty sure my 3D vision is not the same as others. The 3DS and 3D films for example give me headaches literally the second the 3D begins and if I push through the effect isn't even very strong. I can see depth into the screen a little bit, but anything that comes towards me breaks. I have a fairly decent amount of experience with the DK2 and Vive, and the 3D effect works better there. It still isn't what I expect other people see though, and yet it doesn't really matter because i'm essentially seeing how I see in real life. My brain has adapted to other clues (perspective changes when I move my head etc.).
Here is a
Reddit thread with people talking about it.