lol.. i dont see why this is becoming an issue... think about it... you open your door, you step into your car, plant your butt and shut the door... who the heck steps on their door sills???? its not like this is a wear and tear item.
if you happen to maybe drop something on them.. i can understand, but hey, you're the only one to blame.
hmm... i wonder if you put plastic covers on your leather seats to protect them, like some people do for their leather couches in their homes?? :hehe: