Do we have to focus on protein forever or just during the losing phase?
I could be wrong, but my understanding is that we will always need to watch our protein. Since we cannot eat all that much, we will always need to be certain we get enough protein. Plus, if you drop dpwn on protein you will likely increase your carb intake, which may lead to weight regain. Just my understanding.
The truth seems to be a little different for all of us. Some can get away with eating less protein, and more carbs, most of us will regain if we do this. You have to keep the same eating habits you learn in the losing phase for life, failure do this causes many to regain their weight. Regain is a very real possibility, you just need to look on the maintenance board to see how many gave gained some weight back. I never hear that happening over eating too much protein, it is always the carbs that get us.