Kind of a little of each. I think the haziness improves the look, but the scanner I have sucks so it looks like I puked all over the paper.
In other words, it would look better if it was on a different scanner. But yes, I do ball up my hand and kinda blend some parts.
Also, this is just a sketch. The focus in this case was not on quality, but on getting all of the contents of the room.