you can change the aerial you have now to one with dab, fm, and nav should you decide to go back, your after 1K0 035 501 J
not to hard to change say an hour, but you will need a new lead to the front of the car 5 or 6m most guys use to the dab port on the RCD
I'm going to order one of these today, do you (or anyone else for that matter) happen to have a part number for the required lead? I will ask my dealer but they're not used to people asking these types of questions. If it's not standard they seem not to know anything sometimes.