You're right on. I got a flat recently and took the opportunity to weigh the naked (E1 five spoke) rim. All I had was my digital bathroom scale which showed the wheel to be 16 pounds.
I was also surprised the wheels were that light.
I've searched on the board/internet high and low for this info and the only thing I ever found was a post that said the wheels alone were 19-20lbs.
E0 Wheel Weight?Not sure where that guy got his info.
cheers.