This is exactly why I started the thread. To find out if it would be OK to have a backless vest as a formal vest vs. a PC vest. I wasn't sure if the back/backless vest option would be more appropriate if/when a jacket was removed.

Quote Originally Posted by Chef
While the waistcoasts with PC jackets have a full back most formal waistcoats do not. Find yourself a nice waistcoat it will look better in the long run. Try a rental store if price is a problem; many will sell used ones.