I started roughing in an addition on tuesday. It isn't too big, maybe 1800sf. I spent the day laying out and mounting boxes and cans. I think there were about 38 cans. All on dimmers. There were architectural drawings that called for 5", however the homeowner has given the gc some discretion and in an effort to save the ho a little money the gc decided to install 6". The Arch. almost had a heart attack when he realized this. "These are only for commercial". Hey you, come back, were over here in the real world.
Even in this small installation, talking to him, he doesn't have a clue what things cost or where it is practical to use them. Not that 5" are cost prohibitive, they are just more. Also, $1500.00 for cove lighting that does the same thing as rope.
Is seems that most architects draw the house and then never come back to critique their work. That's how I like it.