It's funny, but I really never get people who want to do only sparring, or grappling, etc. I am a few blocks from Matt Serra's dojo, and a Gracie Barra one town over in the other direction. If they want that, they know where to go.
Most of the people who come in say,"I've always wanted to learn Kung-Fu."
There are a few who I've trained on the side in other things, such as LEOs, but that is in addition to the regular curriculum.
"My Gung-Fu may not be Your Gung-Fu.
Gwok-Si, Gwok-Faht"
"I will not be part of the generation
that killed Kung-Fu."
....step.