Bags of this size and type are fairly popular here; at least in the areas I frequent. They seem to be used as a sort of upscale shoulder strap version of the shaving bags gangster types carry their gear in. Most I see are Porter or clones made from poor materials.
This canvas bag from Workers is made from all natural materials and would make a great bag to carry your daily essentials. It might be to much like a purse for many but I think it looks fine.
Workers Canvas Shoulder Bag