So it's a little cold here sometimes (Portland, OR). Not super cold, just enough to make me want to wear a jacket for the first part of my rides. But 10-15 minutes into the ride, I usually get to warm to want to wear it. So my question is, in general, are these "bike specific" jackets made to be warm but breathable enough that I wouldn't have to take them off during my ride?? And do you guys have any recommendations for a decent one? I'm looking for one that looks fairly "normal" so I can wear it as a regular jacket when I'm not on my bike... eh?