Hopefully many will chime in to get a good consensus. I suspect the answers will vary.
Here's my experience: On my 2005 TW, I only had to adjust 1 valve one time and that was it over the 13,000 + miles I had on it. Because of a mechanical issue not related to the valves, I put in a replacement engine and didn't have to adjust the valves in it at all. Checked often on both with just the one adjustment.
On my new 2015 TW, I checked the valves last week. Had to adjust both. So, the jury is out if this will be common on this engine or not. However, I would say in my case with my previous TW engine(s), it was not common.