the maxxis holy roller is a waffle pattern tire. great for pavement and hardpack dirt. designed as an urban/dj tire. available in 2.2 and 2.4 widths.
a mountain bike is an excellent way to get around town. but if you really want to go from point a to point b, a road bike will serve you way better. put a fatter urban tire on your MTB, and use it as a FUN commuter. you don't need to go all jeff lonsoky, but find all the little trannies, dodge some pedestrians, drop some stairs. go PLAY and you will be rewarded with a smile and better bike handling skills.