When it comes to design, things don't always work out as planned. Time is expended, concepts discarded & designs scrapped. That's the reality of the creative process. Such was the case with the 'Sidearm' shield holster. The original concept would allow a rider to carry an extra shield should they get caught out after dark. Obviously this concept proved to be a bit of an overkill, but going through the mental design exercise was fun none the less.
The ill-fated shield satchel - forever relegated to it's sketchbook prison - and that's probably a good thing