I first heard of coleslaw on a sandwich in 2008, it was a "Slaw-Dawg" which is, you guessed it, on a Hot Dog. I have also seen the BBQ-Slaw setup like DGSS mentions above! Your creation looks to be top-notch, I never really thought the others would be that good. But this looks Really Good!
Sometimes it takes third party to initiate it ;)@originalworks