I used to wear that Woolrich stuff, and I wouldn't recommend it.
First off, it soaks up water like a wick, and it's heavy to begin with. Trust me, you don't want to be wandering around in soaking wet wool.
It is warm, however, but I'd recommend the good polarfleece stuff. It's more quiet, more flexible, just as warm, and it doesn't seem to suck up the water quite as fast if it starts to drizzle.
Here's a link to the Whitewater fleece jacketthat I wear. This is the nices hunting coat I've ever owned, and I've blown a lot of dough on these things. You can usually find the Whitewater stuff on ebay at much lower prices, so check there.
http://www.cabelas.com/cabelas/en/common/search/search-results1.jsp?hasJS=true&_D%3AhasJS=+&Query Text=whitewater+fleece&_DARGS=%2Fcabelas%2Fen% 2Fcommon%2Fsearch%2Fsearch-box.jsp.22&N=4887&Ntk=Products&Ntx=mod e+matchall&Nty=1&Ntt=whitewater+fleece& ;noImage=0