A friend of mine skis this exact jacket. It's sweet looking. He runs the yellow/gold pants to match. He skis pro level, with perfect GS, so all in style points = Baller.
I also have the Sabre AR, but in orange. It's an amazing jacket. As they say "Bomb proof" I go medium at my height./build 6'2 170. But think body habitus: Riverdance. Medium Works for nano and synthetic underlayers for me, but not really puffy. If I went puffy or deep and/or cold layers, I'd want a large. I have Arnold shoulders too, except my Arnold shoulders are actually two of my arms combined. Similar at least to Arnold.
I'd consider buying if I didn't already own a relatively new one (5 years old and looks/performs new). They last forever. Arc warranty follows the jacket for reasonable life of the jacket. So this thing would have solid life on it.
Great jacket, great price. You should sell it fast. Good luck.