This video about a class of young students of sumo stayed on YouTube for a few moments last week. And for obvious reasons: those loincloths do not adhere to the sharing site standards (hope it can stay here for longer...). In the second part there is another sumo fight: well, sort of... Made in Austria by Catfight Corner, it uses some of gestures of its Eastern counterpart and a (bigger) loincloth; but it prefers to use the garments as weapons for wedgies and fighting quickly gives space to a nude encounter of a lesbian nature. With a little more sensibility to the original sumo aspects - very sexy by itself - they would have produced a more interesting product.
I don´t know the source of the Japanese video; the Catfight Corner is E-C-C 139 Bianca Germany vs Sexy Mo.