Skate helmets do provide the same protection, if not more protection, then a bike helmet. The biggest drawback is venting. Skate helemts are designed to be worn for a short period of time (>15 minutes) on a half pipe or skate park. Bike helmets vent better as you ride for hours. You didn't disclose your locale, but if your in the Southeast or Southwest, and plan on riding for long periods, a bike helmet would feel better.