One time, my Skadoosh landed on my granddaughter's face (my eldest now, only grandchild at the time). Luckily, she wasn't scratched badly, and just had her eye mixed, but this did startle her enough, that she became a little extra cautious if she was around when they were out. Skadoosh, does happen to be the most outgoing glider, although oddly she can seem skittish to me at times since our first big move.
I've had this happen to me as well, most of the time it's partial, like top of my head, but partly on my forehead or side of face. I've also been smacked in the face, I believe by my Lulu, and I don't even know what my Ollie boy is doing to my ear at times, but man oh man it's painful.
This is part of glider parenting, they don't mean to hurt you when they land on your face, but the smacks, oh yeah, they're on purpose.