autoglass replaced mine no problem
same deal, non VW branded (would have needed extra cash and extra wait if I wanted VW branded).
Just make sure you get the right tint, and stand over the fitter
Key points to check are the top gap (from roof edge to screen) before and after replaced (it shouldnt be too big) , as well as the alignment to be able to view the VIN plate.
Ask fitter if he's done VW before too
Guy fitting mine specifically removed a strip at the bottom and trimmed both bottom edges before fitting, it looked a bit brutal but he confirmed they dont fit properly if you dont do it.
Mine has been watertight