Nice carving designs.
It's nice to see all that saddle stitching, but the holes punched for the stitches are entirely too large. This makes for an easier time doing a double needle stitch of course, but it isn't the ideal. Saddle stitching does not require holes to be punched, it can be done with an awl, but if stitch holes are punched they should be the smallest needed for the stitches. The stitches should be tight in the holes. In addition, there is no groove laid for the stitch line so the stitches are proud of the surface of the leather which leaves them exposed to abrasion and snagging. This is simply less reliable and less durable.
The engineering of the cases is very cool I think. Several are very unique. Quite remarkable.