Recently started playing ESO using Virtual Desktop instead. I set Virtual Desktop’s virtual display at ~93% with curved off, and I set the in game FOV to 120. This gives you a non-stereoscopic window into the world that floats in front of your view. Head tracking obviously doesn’t change your view of the world, but if you keep your head centered the perspective for everything is pretty close to correct (using the Distant option in VD does help with keeping your head centered, but also prevents you from leaning in to get a clearer view of text).
Definitely not as immersive as Skyrim with VorpX, but still way more immersive since it is like having really large display just the right distance away from you for the FOV set.