Just want to point out that now some European airline limits the carry on weight to be 8 Kg (17.5 lbs). The camera gear alone will be that much weight. There is no allowance left for lap top, power supply, external hard drive etc. A bunch of high capacity CF card (or SD card) is the best way to go, reguardless what camera system that you have.
Which isn't an issue with a reputable airline.
I think I once had 11 or even 12kg of hand luggage + the full checked in allowance and nobody complained, I'm flying Lufthansa by the way.
-> Also, if you read the Lufthansa terms closely, it says 6kg or 2kg more with a laptop, and a small camera, and, and, and... so that you sort of think that they will not complain if you put anything expensive in your hand luggage.
-> And the cheaper stuff can obviously wonder into the main luggage (e.g. cables)