I had those Kenda Kwick 700x30s on a bike for a couple years. Aired down, they weren't horrible on grass or light gravel. But once I clipped off the knobs and let them wear smooth on cement, they turned into surprisingly good road tires. Now that cyclocross has moved on to larger tires, the Kwicks do seem like an odd size.
Just for funzies, here's how they looked once I decided to retire them. The rear was paper-thin.
