I am currently shopping for PPF and ceramic coating for my Model 3 with ultra white seats, and at least one reputable installer suggested interior coating to protect the ultra white seats. I am posting in the Model X forum because the Model X has had ultra white seats as an option for the longest period of time, and a quick search of past threads did not have much information regarding aftermarket interior coating. 1. If you installed aftermarket interior coating (Modesta, Ceramic Pro, etc), please share your experiences and if it made the seats easier to clean or less likely to collect dirt than with just the factory coating. 2. Will aftermarket interior coating negatively affect the long term durability of the ultra white factory coating? Please feel free to weigh in or share any experiences you have. Thanks!