The formalwear thing strikes me as an interesting edge case. I do not wear a suit regularly. I work in a lab and dressing up would be physically impractical (t

The formalwear thing strikes me as an interesting edge case. I do not wear a suit regularly. I work in a lab and dressing up would be physically impractical (they would get destroyed) and culturally odd. Despite that, there are a few occasions where I absolutely need a suit and nothing else will do. Sometimes this even happens at short notice (e.g., for a funeral). How does this fit into your four-part test? Q3a?