For what it’s worth, a good half-way is using Virtual Desktop for it. You can still use keyboard/mouse but you get a pretty nice view expansion that way. Not VR but certainly with that kind of feel. I played around with it over the weekend with how much curve and overall size of the display. Having to turn to look a bit makes it seem more immersive. I guess the drawback is you can still get off-angle and have to do a quick reset of your VR headset centering.
I’ve not done a VR playthrough, thus me attempting different methods over the weekend. I had some display issues with full VR since I’m not actually running an approved Steam VR headset.