I always think of the risk involved going into an engagement. If I'm in a woodland, then I won't wear it. I'll just keep my mouth shut. Wearing a mask is extremely uncomfortable for me, but I always have it on me so I can quickly put it on in a matter of seconds if a situation arises where there is an increased risk of me getting hit.
I know there's a chance of me getting hit in the mouth, but for me, I would rather have the comfort of not wearing it and take the small risk for woodland, but I'll always wear it in CQB, where you are working at much closer distances.
@nickh Was you at F&O's RAF Yatesbury on sunday?