Actually another way to look at this enquiry would be to ask if the climate screen were chipped, damaged or cracked could it be replaced by a third party/retro-fitted or does it have to go back to VW to have the windscreen refitted? If it does have to go to VW to be refitted as I feel may be the case would it be part of the factory warranty if the windscreen were chipped 7 cracked?
However if it can be retro fitted it would be easier to replace the windscreen should it become damaged.