I have been hit by a line drive, in the mask. I am not going to watch the Chapman video.
My DD's team - 14u - has told the girls they do not want them wearing them. According to them they have been told that it is a negative in the college search. I know that's an old debate and I do not want to reopen it, it's just what they have said. They have very good relationships with colleges as an organization. My DD pitches and plays third when not pitching. She likes pitching without a mask much better. She would always complain that it bothered her when pitching.