WI would have concealed carry were it not for the governor vetoing the legislation. The only other state that prohibits any carry is Illinois.Wisconsin is one of a few states that do not allow CC. I can't imagine shooting someone from a moving bike.
And car vs motorcycle is about like armed vs unarmed.
I can also legally carry openly in MI. I've been known to do that on the bike. It has its advantages in that people leave me alone.