Everyone will have a more comfortable turn -in side. Think about anything that requires you to use reverse dominate biomechanics. Most people find turning on ice/roller/blade skates buy crossing over skates easier one way than the other, snow skiing turns easier one way than the other, and the list goes on... batting, golfing, boxing, even powerslides in a car. I'm much more comfortable hanging it out to the left than the right. Same withthe bike. Most right-handed people will find it easier to turn left...
