black and white logos

this article, is it time to retire the black and white logo?, i found on Ben Terrett's blog, Noisy Decent Graphics. he is a graphic designer from london, and in the article he makes a solid argument as to why we do and why we do not need black and white versions of logos today. it argues for both sides so read the article and you make your decision.

im gonna go ahead and support the "for b+w" argument for sake of his first point, "it's good discipline." i have created an identity system before and i know that thinking about a logos strength at the simple b+w stage is beneficial later on in the game.