Not a good idea Carl it will form condensation inside the camera and will take ages to clear, and worse still the moisture will cause damage inside the camera,
I knew it was always going to be a problem - so I fixed mine by getting my camera modified. Sure looks expensive and it is, but you will never regret the move
Isn't Bert doing something like this. Putting his camera into a peltier fridge when using it at capture time. Be interesting to see how he gets on with condensation, if any.