How the hell do you wear medium in Git and large in BoO?! We're the same height but I outweigh you by like 13 pounds and I'm a size down in both...lolwut
Dunno. I tried a small Gitman and the sleeves were about an inch too short and it was so tight in the chest there were creases around the buttons. After a wash/dry the sleeves on my mediums are even too short. I've never tried a medium BoO shirt but I doubt it would fit better than a large.