I am an all weather rider but try not to go below 0 degrees. In the past I've just layered up often looking like and feeling like the proverbial Michelin man. So after many years of being in denial about heated clothing I am about to succumb. Having done a bit of research it appears that Keis or Gerbing vests/jackets are the popular choice. My question is one of comfort really as I don't like too many layers in the arms. Can I get away with a vest for more comfort or would that leave my arms cold? Any advice from experience heated vest users appreciated.