I just had my front and rear mud flaps installed—these are the Genuine VW ones. I think they look great, but only time will tell if they actually reduce the amount of spray on the back of the car, which tends to get dirty so quickly.
I didn’t notice any reduction in range during a 20-mile drive on the motorway, but it’s still early days.
I’ll keep this thread updated for anyone who’s interested. For now, I’m happy with how they look!.