I recently purchased a Saffiano Cuir medium bag from eBay. It's new and I received the dust bag and all the cards with it. What I noticed when I received it is that the straps are able to move up and down (picture attached) whereas most that I looked at had "fixed" handles. Obviously it didn't stand out to me too much because I overlooked it and I still love it but I just wondered if anybody knows what the difference in the different bags are?