As this was happening on my 2016 here in Australia, I was looking at replacing the entire gear knob but decided to look at just the DSG VRS top part of the gear knob. I ordered it from Skoda Parts, based in the Czech Republic who were great to deal with. The cost of the part as 14.52 Euro and shipping was 22.3 Euro, via Fed Ex. It took 6 days from them sending it to arriving with me so very quick. The part number for anyone who wants it is 5E0 713 146 E. I was a little concerned at how difficult it would be to remove it but I have to say, I was wrong. It took about 30 seconds to replace it. Very easy - I just used a small trim removal tool, pulled in the gear knob button to expose the top (front most) surface of the gear knob 'cap' (this is the part I am replacing), this then just flicked up and off with a little more pressure,. The replacement just hinged from the rear ward side and clipped in place. My old one had two sections where the chrome had come off and sharp (ironically this is exactly what happened on my previous R36 gear knob).
So, for the total of 36 Euro, I now have a gear knob that does not scratch and cut my finger and looks far better. For anyone with this issue, and out of warranty, it's very very easy to do... Brand new one is in the bag, the other two show the chipped parts, and the box the part came in.