i have a wested X1 wolverine jacket and i have gotten it soaked due to rain, and nothing bad came from it. I have also read that when that happens you should wear the jacket until it dries some, to help it "mold" to your body. so if anything it should help out some, but DO NOT attempt to dry the jacket, just let it air dry.
i wrote wested and asked them if there was anything i needed to do as far as treatment to the jacket in case i got it wet, and the response was "its ok to wear the jacket in the rain"
oh and my jacket is made from pre-distressed Cow.