Aye! I know what you mean, we had a bloke in fitting radiators recently, and I got there just in time.
As he was about to leave a large area of the old wall showing, rather than move the radiator 18 inches to the right?
The new radiator was a lot smaller then the one he took out...he says "I thought you wouldn't like to see the cooper pipes along the wall"
I says, I would rather see the pipes than look at a big area of the expensive wall lining stuff;)
I had just enough left over to cover the smaller area he left.