Yes.
It's horrendous and no VC. Although it's f/2.8 but it just put me off and if you really dunnit the VC/IS but the f/2.8 then might as well go for the Canon variant without IS one. Got USM somemore. Just paying a few more for quality and built.
The lens is relatively okay for events and would be a big no-no if you're gonna be sniping at targets.
Sigma would be a great alternative to the 70-200mm f/2.8 league but too bad its coating issue is a big turn-off.