I got these to match my beryllium shell and they are exactly what I was expecting. Super lightweight and tough material is good for skiing. I love that they have suspenders but only come up to the navel, which is a great height. I'm 5'9 and about 145 and the medium fits great. They were plenty warm with a thermal layer underneath. The watertight front zipper is a nice edition and the zippers down the leg. They also are loose enough to accommodate my acl knee brace and the articulated knees are nice. Powder cuffs fit well around my ski boots and let no snow in. Reinforcement around the ankles are a good edition to prevent cuts from skis. I haven't had them out in any real wet stuff yet, but if they're anything like the jacket, I'm sure they'll be grade A waterproof.
The only thing that would make these better would be more pockets. There is only one small one high up on the bib, which is good for a cell phone or something small.