Morph,
First let me extend a warm from Toronto, Ontario, Canada.

I would have to agree that if you are wearing a waistcoat with the PC then the belt is not needed in fact if you do wear a belt with the waistcoat, it can cause the waistcoat to jut out at the bottom. However it does look nice if you are not wearing the waistcoat.

Also you are right getting well fitting shirt should fix the problem of bunching up.

You might want to take a look at this thread of xmarkers in formal gear:
http://www.xmarksthescot.com/forum/s...ad.php?t=22433