They will not notice any difference. Everybody, including my family think I already got rid of my gyne. I have lost alot of weight in the past 2 years, doing sports on a regular basis and going to the gym aswell. I joined the gym last year, and since then not only have I lost weight but also gained some muscle. I have a very good shape. Around the same moment last year I started training and losing my weight, I also discovered the under armor compression t-shirts and have been wearing them ever since on a day to day basis. While I am wearing it, my chest looks flat and nobody notices my gyne.
If ever they are to notice anything, they will assume it is due to my training and losing more weight. So I am not worried with that. What I am worried with however, is the state I will be in coming out of surgery. I just hope my bandages go unnoticed. But with all that I have read on this forum concerning what usually guys go trough post-op, I think I should be fine and hopefully there will be no complications.