I own the guide pants and guide vest. Burrs do not stick to them. I have also found them to be very water repellent. I waded across a river in them last year (ran like a maniac) using some gaiters, got to the other side and I was completely dry. I have also hunted all day in the rain with them and experienced no dampness. Durability is ok, I have several small tears in them from 3 seasons, especially from talus. Another plus is they come in 35" inseam so they come down over your boots nicely. The zippers are great and the buttons. The zipper toggles are garbage though. Washing and drying does not cause any shrinkage either.
They are very warm though, thankfully they have leg vents that allow you to dump heat well if you choose to open those up. They are my favourite hunting pant once the temperature get down to about 5*C. Otherwise Prana Zion stretch are the bee's knees!