I am wondering about the sizing. My chest is around M/L, but waist is closer to XL (this seems a bit weird because I am not all that big). Does anyone have any experience with the fit of these jackets? I wear a L Arc'teyrx Atom LT Jacket and a L Westcomb Shell, but their sizing is a mix of the sizing recommendations for these jackets, so it isn't exactly clear. My basic measurements are 42" chest, 38" waist, 31" arm; following the sizing for this jacket, I seem like some kind of mutant, I'm not. Any suggestions, L or M?