It's fused. Some are half canvas from the Roma line, but others are no canvas at all -- you can't tell just by the label (sort of like Arnold Brant -- sometimes it's half canvas, sometimes no canvas). Not a bad fit, but nothing special and certainly not worth $400.
I like that suit but it's black. I'd hate to wear it to work, only to find some of the posters on that other thread waiting for me, ready to beat me over the head with an empty bottle of bourbon from NY rather than Kentucky.