Client wants simple but unique execution. Use a square divided into 2 triangles.  Note that "B" and "M" are an opportunistic design layout pair.  Notice that using the same custom font, rotating "B" -90 degrees gives us "M".  Flip the "M" horizontally and you get the slightly bigger loop that makes for a "capital M case".

​

Below is a masculine "2D perspective ribbon" as an option.