The obvious mistake he makes is the case on the left side is the wrong way round. The wheels should be at the back to act as a wheely bar.
My wife and I will be travelling in France next year on my 600 and have been looking at the luggage options for holding everything, I have told my wife we will have to pack light. So why does this look like the best option, I imagine this chaps wife is in the shot if you look hard enough. http://www.flickr.com/photos/sm-images/4770990170/#in/photostream/