From: Scott Martin <email@hidden>
I would not use a piece of paper as you suggest, unless I am absolutely sure this paper is neutral. You mean "natural white" without brighteners right? If a person is printing 100% on Moab Entrada Bright White (for example) then customizing the displays white point (color and luminance) to match this paper's white helps the user get a better idea of how the image and it's highlights will look when printed - does it not?...
I would not use a piece of paper as you suggest, unless I am absolutely sure this paper is neutral.
For users that print 100% of the time to photo paper I encourage them to customize their displays to photo paper white...