Now not being a person to wear a good pair of skateboard shoes while skateboarding, I have trouble convincing myself into not wearing them on a motorcycle.
Pro
1. They have soles with good grip on sand, grass clippings or pea gravel when putting a foot down at a stop light, and at the same time are hard enough to ride motard'd more than once
2. They work on the shifter
3. They dont melt.
Con
1. Waterproof is not an option
2. Not safe at any speed, for ankles that is
3. The laces are only for looks and the elastic on the tongue keeps them on the feet, kind-of sometimes hopefully