I really like the white interior on the X, but my wife is concerned that it will wear fast, especially in our family car. It's a fair concern. So, while I realize that the leather material is different between the S and the X, I'm curious how the early sig S cars with the white interior are holding up? I don't mind a little extra care. Has it been a lot of work? Black is out, and we already have tan in our S. I was lucky to be at the X event and thought the white was the best choice by far.