I was thinking since married to the gi is the name, having the Shaka (which is a very generic Jiu Jitsu hand sign) and having different belt ranks around the ring finger similar to how the belts are pictured. 
However I do think the angle the hand would have to be at might be sloppy with how hard hands are to draw etc, so maybe instead of that angle, just do the belt rank as a colored diamond similar to a wedding ring. 
I also think the ball and chain fits with the name fairly well. Having the specific belt rank colors as the main color theme is fairly important.

Sean Keefe

“Married to The Gi” , but if aesthetically that doesn’t work I completely understand. Logo Design