robwilliams, Sure, it's not weather sealed. But then again, you're going to pay at least double to get a 1D body that is weather sealed. You ultimately pay for what you need/get.
smc1377, It does have some inbuilt auto-noise reduction settings that can be toggled under the Custom Functions menu option. I would also agree, the noise on images is a lot lower than other cameras, probably due to the auto-noise reduction setting.