I would definetely be in. Most people are fully kitted anyway. Body hits are usually fine. It just takes the right gear. Perhaps this would be a good winter game because you could wear more layers/thicker clothing and not worry about heat exhaustion.
As for facial protection, definetely wintertime would be the best so face masks, face shields, balaclavas, helmets, etc. would be doable for longer periods of time. I have plans for modifynig a gasmask to rated standards but with built in ammenties instead of actual gas mask function (like multiple computer fans, hydration, radio, etc). so that would work for this type of game.