Dennis, I dont mean to intrude on your thread but since you are doing such a nice job on the driprails and others have inquired about just shaving it, I thought I would share some pictures of a shaved drip rail and why I think you are right that it leaves something missing.
BTW this is NOT my truck! It was done really really nice with SS hardware everwhere but I think those modern mirrors are hideous. (hope this isn't anyone's truck here)