Between the two, I would choose the South Bank Besace. It‘s a great crossbody with a slim profile yet it can hold a lot. I have tried it on with all my things inside and for me, it holds a lot more than the pochette Metis (which has a divider that makes it less flexible for storing things for me). Do you like DE or Mono better? If you don’t carry a lot and you prefer mono, what about the Santoigne or the Pallas BB? Some people like the SpeedyB 25 as a crossbody but personally, I find it stick out too much from the body when worn crossbody.