doug56_53 - 4:13 am on Nov 2, 2006 (gmt 0) Doug
My experience is: if the client's logo has the right colour all the other colours will look ok for him/her as soon as they are well coordinated and balanced.
I never had a monitor well calibrated even having a "spider" at hand all the time. I only calibrate them when a print job involves skin colour. Telling the truth - I only calibrate the left one, leaving the other(s) with the average brightness/contrast for the same reasons all the other replies mentioned.
You are lucky - my boss changes her monitor calibration every time her work is not looking the way she wants;)