Just had a go on the playcanvas WebVR 360 Image demo and it looks very funny on the Vive. Because the scale of the sphere is so small that when looking through a roomscale device it looks like you are inside a bubble (which feels kinda fun but probably not the effect you were after . Increasing the scale of the sphere by 1 magnitude is enough to make it feel more normal.
Thanks for the feedback!
We’ve now made changes to the WebVR 360 projects so please give them another try to see how they feel