This season’s Pitti Uomo guest designers were MM6 Maison Margiela and Setchu, who respectively held their Firenze runways on the second and third nights of the menswear tradeshow.

Marking the first full MM6 men’s show, the clothes reimagined traditional masculine archetypes with a distinct Margiela twist. Linen was coated and rubberized to mimic black leather; a tuxedo ...