Yeah I did. I think I just had a really good day, and haven't had one since, and other people HAVE. But practice can never hurt. Plus it's fun to fight against people from different worlds who trained different than me. You ever tried to fight someone who can teleport? I can bring Kosmo one time and let you practice. It won't do any good in the ring but it makes for an interesting sparring session!
I think every group has a "will eat anything" person.