We have SCOTT packs where I work.
When I did my fit testing a few months ago I had about a days worth of growth on my face and I failed my fit test. I did the test about ten times with diffrent size masks, and even having the tester yanking on the starps. I had to go to the store and buy a new razor/shaving cream and shave.
I have done training with several days growth before and never had a problem.
I shaved my goatee when I got into the fire service.
Then I heard the voice of the Lord saying,
"Whom shall We send? And who will go for Us?"
And I said, "Here am I. Send me!"