I currently own a 79220N and suggest to get the ETA version on a steel bracelet, not the in-house.
1. Steel oyster style bracelet on the ETA just feels more solid and IMHO looks much better than the riveted bracelet on the in-house version.
It's best to purchase Tudor (as well as Rolex) on steel bracelets not only because they're great. It also helps with resale value and it's a lot easier (cheaper) to purchase a leather bracelet with a deployant clasp later on.
2. An in-house version is 2mm thicker and it does matter if the watch is worn on a nato. It doesn't if the watch is worn on a leather strap or steel bracelet though.
As previously mentioned, Tudor natos are pretty short, however, I cannot agree on the poor quality. I love mine and really think they are hard to beat, despite being overpriced (what's not in the watch world?).