Well as the temp in Cornwall has been known to rocket into the 80's . It's been warm here for a couple of days, so I'm back in the short sleeves and a leather waistcoat. If the windchill brings the temp down to 3c (38f) or so I just put on a jumper. I have had good comments about the style, and with leather lined pockets my sporran is a lot lighter and I have a pocket for my watch.

Overall I tend not to wear my tweed Argyll unless it's a more formal setting, court for speeding was the last time I wore it.

But remember the different conventions here and there.