I may have missed if it was mentioned earlier but I have seen guys in a CQB area have paintball masks with everything cut away except the cow catcher in the front covering the teeth and lips. They said they it kept the mask from keeping too much heat in. How ever is sounds like your working in a profesional enviroment so maybe even try one of the neoprene facemask to protect your skin. Me I just wear goggles but if I take a hit it would probaly make me look better lol
"Pain is just a symptom of weakness leaving the body"