I have a full rigid (Cannondale CAAD3) bike with slicks and sometimes put knobblies on for some dirt riding. The MTB will be a lot more fun and look a lot cooler than a hybrid. I would never recommend anyone getting a hybrid. There is nothing it can do that can't be done on an MTB with slicks. As khuon mentioned cheap suspension forks aren't worth the extra hassle of servicing and the massive weight penalty.
CHEERS.
Mark