also depends on when and where you are going to be hunting. Most carharts are really truly from another age. they last for five or ten YEARS of heavy construction work. meaning on at 6 am and not off till 5 pm or later. all kinds of weather, any level of the construction process.
PROBLEMS. almost all are cotton based, that means in the wet, they are not so good. I know a few guys who coat the knees with sno seal so they can kneel and so on without getting soaked but if you are in mud or wet, they will get wet, and heavy.
They make some that are cordura. wont get wet, but LOUD> also not so flame resistant.
On the other hand. there was a article floating around about "my pants saved my life" which was about how tough carharts had resisted bear attacks, conflicts with saw chains or falling lumber and the wearer did survive.
On the job site you see them everywear because they work.