Mickey, maybe. There is a remote chance that the horn buttplate would shatter upon impact. If you doubt the hardness of the human skull just ask some of cops that you know and the stories that will come that will surprise you. I personally saw a dude get whacked across the face with long nightstick and saw it crack into two parts. Now I don't know who was more surprised, the cop or the perp. Maybe the stick was getting fatigued and was going to fail at one point anyway.
-------------------- Lo do they call to me,
They bid me take my place among
them in the Halls of Valhalla,
Where the brave may live forever.