One of the reasons I ordered the UW seats were because I thought they looked like they held up better than the Tesla leather seats I have seen in person. Hopefully the newest (Tesla Premium) leather seats are better, but most (not all) leather Next Gen seats and (even worse) original leather seats have lots of wrinkles or "sag". My BMW leather seats looked better at 10 years old by far compared to even 3 year old (2014 era) Tesla leather seats. YMMV of course, but I am just saying what I personally observed looking at other Teslas I have seen in person or in photos (eBay, Autotrader, etc).
However, the Ultra White seats I have seen in person that are used for extensive amounts of test drives looked virtually new. Given the "history" of Tesla leather seats (again in my observations), I felt that the UW had a better chance of holding up longer term. That, along with Tesla saying that they are the most stain resistant, led me to make the UW choice. Oh and they look like they are straight out of the future ;-). Only time will tell how they (and the newest Tesla Premium leather seats) hold up long term. And by that I mean 3, 4, 5+ years. We will see!