Michael Kamber is a well-known photojournalist currently attached to the Baghdad Bureau of the New York times. He has been nominated three times for the Pulitzer prize. He has covered conflicts in Iraq, Afghanistan, Liberia, Cote D'Ivoire, Sudan, Somalia, Haiti, Israel, the Congo and various others.
He has written an comprehensive review on the Leica M8, which he used extensively in Iraq. He does not mince his words and concludes that the M8's is unusable for working photojournalists in combat situations.
For Michael Kamber's website, click here
(Thanks to Candace Feit for the link.)