Bikepacking - a viable alternative to racks & panniers

I believe that's what I've got...more than happy with it. Tends to wobble from side to side a bit when riding but figure that's kind of inevitable with a seat pack and doesn't impede cycling.

The almost cone like shape of the bag means that it's harder to make full use of the space unlike say a pannier bag but then again this is kind of an inherent limitation of seat packs