When I ordered my new 6D body, the nice people at WEX gave me a nice new bag free of charge. I've not used it yet but it just about falls into the Easyjet guidelines for cabin baggage so it will be accompanying me on our little trip to Iceland. It comes with a handy 'rain' cover so it should keep the 6D and a few lenses nice and dry from the snow.
Hoping to get some nice photos during the trip but hopes of seeing the Aurora are looking unlikely with snow and cloud forecast for most of the week. Fingers crossed!