funny you say that about mark Coleman, I seen a match when he fought a former boxer that used kicks on him and stayed out of his range, Coleman was up against the cage scared.
You probably saw the end of that fight (assuming you mean the one where he gets kicked in the face, his eyes roll back, and he kind of falls blankly to the canvas) which was like half an hour or more into it, and both guys were completely gassed after going all out. It just boiled down to the other guy having better cardio, and being able to bring the big kicks against him without even having to worry. Coleman was against the fence because he was getting too tired to stand.

I don't know much about Judo, but if It's what I think it is (quick, stand up grappling focusing primarily on throws, right?) then it would be a GREAT supplement. Last thing you want to do is go jiujitsu on them and pull guard, only to find your face crushed to a pulp by 10 bikers in steel toe boots. If you could perform a quick throw/slam, its a great way to take someone out of a fight...especially if they have no take down defense and are your typical barroom brawlers.