I have two pair or Filson whipcord pants and highly recommend them. They cannot be washed of course, but they wear well, are not itchy and have maintained their fit. I have worn mine quite a bit and they are going on their 4th year of use. I generally only dry clean mine once a year.

I have a load of Filson clothes and in every case they have exceeded my expectations for comfort, durability and functionality. I generally have found Filson's to be bargains....only expensive at purchase time, since they give years of service are much less expensive in the long run.

The whipcord pants look good for work wear and have the right sort of fit for field wear. They are not too thick and hot for work wear either. They are not totally windproof and snow will stick to them to some degree, but they are not any different in those respects than any other wool pants.

I have no experience with the Cabelas pants.