I voted yes too.
I agree with the others in that there is a place for sposies. I don't think I would want to lug all Bella's nappies abroard with us and I would be worried, if she did a real stinker on the plane, that somehow the smell would get out of the wetbag (unlikely I know) and cause the plane to stink!!
Give yourself a break from all the washing and have fun. He'll be back in his lovely cloth again soon enough