[Jon K.]

I would ask a Q&A question on this as it blocks your true vision(from my understanding of the Rift) and it would therefore become a safety concern. Also remember that you must wear Safety Glasses at all times while on the field. My inclination based off the safety glasses aspect alone would be that this would be illegal.

Should the GDC rule otherwise, and you do use the Rift, be sure to bring a print out of the Q&A and bring it to the head referee's attention at every event during practice day so that they can inform the rest of the field crew.