One of my bros, who is now an active at Ohio State got our coat of arms on his calf. Myself and another guy from my class have different cross & crescent tats. mine is like the friendship pin (
http://www.lambdachi.org/fraternity/symbols.asp), and his is just the cross & crescent with the letters, and no shield over it. Another guy in the class under mine has stylized bubble letters on his bicep.