It depends. For a suit with matching waistcoat, it goes on one hanger. Yes, it is a bit of trouble to take the jacket off the hanger first. But in my house, built before the days of walk in closets, it is a necessary saving of space. If the vest is to be worn with a variety of jackets, kilt and otherwise, then it goes on a separate hanger. I also buy hangers that have a hook built in so several jackets, shirts, or whatever, can be hung one above the other.