I have 2 CT blazers and a suit, which is half canvassed.
The fabrics are nice, of course, it's not going to hold a flame to something from Zegna or similar, but I don't think you can do better for the price. I really like the cut, though. Quite sharp and I would say better than a similar Zegna blazer that I have.
Are the blazers half canvassed? I don't really know. They do not feel fused, but I can't comment on that.