I've never had the best experiences with VR. Previously, the only time I didn't feel immediately sick was during the Evangelion ride at Universal Studios Japan. Which is weird because it's a rollercoaster.
I once nearly vomited during The Vanishing of Ethan Carter and that's basically just a walking sim.
Suffice to say, I was nervous about trying HP's Mixed Reality headset. And what I found was a pleasant surprise.