1. sleek devices are more generally-appealing in the store/advertisements 2. it's easier to effect a rugged case on a sleek phone than a sleek case on a rugged

1. sleek devices are more generally-appealing in the store/advertisements 2. it's easier to effect a rugged case on a sleek phone than a sleek case on a rugged phone. 3. oleophobic-style coatings cut down on finger-smear