Do you ever go to restaurants with outdoor seating? I live in a chilly and damp part of the USA, but everyone loves nature so restaurants are determined to have outdoor seating with heat lamps, or open the windows indoors at night in the Summer. Especially places near the water, where it can get quite chilly. I always start off fine, but sitting for a couple of hours while eating and chatting makes me so freezing I need a parka to stay warm, so maybe something like this. Or an outdoor wine tasting, outdoor wedding/party, lakefront event; all of these seem to end up freezing at night. My thickest wool Chanel jackets get their use in these occasions, so I am guessing you could use your lovely wool suit in such situations as well.