+1 PacSafe makes a fanny pack with the mesh in-between the fabric layers (in the waist strap)......a thief can slash all they want, but they won't get the bag/contents. The aramid weave is a good idea, but the wire mesh would be bomber. I prefer the waterproof liner solution. This allows one to remove a clean bag (with the contents) at night, while leaving the dirty exterior panniers on the bike. Lastly, what "Liter/bag" are you targeting?? It seems like the one of the complaints of the Wolfman Expeditions is that 19L/bag is too small. While the Rocky Mountains are huge. In my opinion, they make fantastic products, but I think something in-between these two sizes of bags would be ideal.