You normally only get sick when doing the movements wrong. Short, targeted, fast movements should prevent it. I am normally not prone to it though and I use 180 and ~90 degree bursts to turn, so the only movement I really see and that has a chance to get me motion sick is from running forward and strafing. It should work same way on VR theoretically. I will find out soon I hope ;)
For using VorpX in shooters I need the ability to switch to “view mode” by keeping a button pressed, as described above. Or for a game where I only shoot via iron sights, I need the opposite. That means by default the head tracking needs to control the mousemovement, but the moment I press right mouse for iron sights, the headtracking control over the mouse needs to be disabled, until I let go of the button.
Can VorpX do that? Shooting while headtracking still influences the mouse, will inevitably lower accuracy.