I disagree. In Blair Witch it was the camera that moved and I could not watch it period as I got a headache. Here, I could watched and any pain I felt was not from my eyes.
I have found that being secret or shy in training in public draws more attention. Just go and do it. If you are confident about being there, even with sticks and bokens and swords then most people will not bother you as you obviously would not be so bold if you knew you were not to be there.