I meant there will be, it'd be part of the build spec regardless of use of the room for concrete that thick I'd suspect. But where it's been drilled you wont be able to see it, only close up.
Lol, Charlie, the technical term above above is widely used amongst the industry, bear in mind it's subjective and encompasses a plethora of issues. One man's bag of poo is another man's feast as they say. (or not) I'm sure he'll elaborate in pinpoint precision.