I honestly don't know the first thing about wearing waistcoats or vests with suits or coats. I don't even know the difference between a waistcoat and a vest. However, I'm slowly but surely upgrading my business wardrobe, and I'd like to work in a vest or two, as I think they look nice. I also occasionally see them on eBay at what seem like good prices. Are vests strictly to be worn as the third part of a three-piece suit, or can I wear them with sport coats or blazers? Should they match the suit/coat? I see darkwatch waistcoats ... when are patterns appropriate, and what should I wear them with? Basically, I'm looking for a short tutorial on waistcoats/vests. Thanks as always for any help!