It's really not a concern. If your boot sole are a little maleable, the BB won't make you slip.
We play CQB in a large building with both ciment flores and covered floores with industrial marketry (whatever it's called). Never herd of anyone wiping out on them. And there are TONS of them all over the place.
When I walk on them, my boots just kinda crush them, without braking them.
Vérificateur d'âge: Terrebonne