There is a standing offer of reward for an authoritative citation to a simple gun grab of an open carrier at
OpenCarry.org - Discussion Forum Open Carry Dot Org discussion forum.
I took up my gun on passage of South Carolina's 1996 Law Abiding Citizens Self-Defense Act, making gun carry legal in SC. Ten years later I moved to Wisconsin that is a traditional open carry state that shortly passed Wisconsin's 2011 Act 35 that legalized permitted concealed carry.
My open carry gun is an SA1911A1 in a SERPA. My concealed carry gun is an H&K USPc .40 in a Versa Carry II minimal 'holster'. My dress-up gun is a beautiful shooter Mauser-Interarms American Eagle Luger in black satin.