Just wondering how their sizing works. I know they have a size chart and instructions on their website, but I wanted to know what everyones real life experience is. Im 6'1" 240lb with a spare tire of sorts. working on that aspect. anyways I wear typically a 36-38x32 pant. however most of us seem to not wear paints up 2 fingers below our belly button as they suggest measuring 2fingers below belly button. so I am wondering if I would be more along the lines of a Large MR pack or an XL pack.