They are very light to pack and are relatively tough. I hunt through alot of huckleberry brush and in three years of use, only one small snag in the pant leg.
On a high buck hunt in the Cascades in WA state, I got caught in a squall above timberline. I tightened up my Frogg toggs and sat on the ground hunched over for 45 minutes in a driving rain. When it was over, I took off the coat and found my polar fleece coat underneath DRY!
I have never had that happen with my gore-tex gear.