It is nice, but without cooling the VRMs... - my personal experience is that you can get higher and more stable OCs with a properly cooled VRMs...
Unfortunately, there is no fullcover block for this card (either), block manufacturer's are saying that it was produced in a very limited amount, so perhaps, it isn't worth for them... but, if they could make separate small blocks just for the VRMs, in addition to those GPU blocks, it would be nice...