I get the feeling if you decide for straight sleeve, then you should get a wider shoulder than your natural shoulder so the jacket is a bit off shoulder to look somewhat clean around the armpit, if that jacket in your shoulder size it will look like a mess on the underarm folds in neutral pose, ( i bought my denim jackets in my shoulder size, and every time I have to alter the sleeve to be more angled to look clean with my arm down on my side, if I buy them bigger I think I can get away with it sorta like round sweater look)
and the suit jacket is the opposite you should get it right at your shoulder size. and it will look perfect.
why would somebody prefer a clean look for a T pose, how often human pose that way, or are they leaping lemurs?
