We've seen these filter through for other vehicles, and now have them available for the T4 (96 on - 15" wheels... others to follow).
We wont go into the details here, except to say that the NONOX discs will look good and perform from the first pedal press... even after standing for long periods (as many leisure vehicles do!).
No more rusty coatings on your discs after a week on the drive!
Read more from Jurid here:
Jurid NONOX Brake Coating