When I teach and that's maybe why I'm so different is that I teach as per my ethos "Karate for the streets not just for Trophies"
Who said those 2 things have to be mutually exclusive? I know plenty of "sports" fighters who could kick ass in a fight outside of a bar or in a car park. In fact I posted a collection of "sports" fighters on YouTube in real life altercations. They all did pretty well.
Ask yourself this: would you really want to get into a street fight with a Kyokushin national champion? Or heck, even a WKF world kumite champion?