This is my third coverall jacket and I'm looking forward to breaking it in. If you like to carry a lot of things, this is the best jacket you can buy. It's great for travel and you'll get a lot of people asking where they can get one.
I'm 6'1," 190 lbs and typically wear a 42R. Large is the size to go if you want to wear anything thicker than a t-shirt underneath. I have a medium that works for me for a more fitted look, but I have had to repair the armpit on that one once.
The only thing I'd change on the jacket is adding handwarmer pockets behind the patch pockets on the front, but that's a small thing. Hoping to see some new colors come out or maybe lined versions of some of the other colors.