did you get your normal size? i'm slender (40/42 jacket), but def. not scrawny. i'm wondering if it would be worth trying a small since i really like the look of it and am still on the hunt for a wintery jacket.
I'm a medium in most things and take a 38 jacket for most brands (5'10", 155-160). I think trying the small size is worth it. You won't have problems with the sleeves or waist, but the pit & shoulders may be an issue depending on how broad/thick you are up top. I have stick limbs but my torso is a bit bigger, and my small size field jacket has enough room for me to maneuver around.