When in Scotland (here, just beyond Inverness at the Alladale Wilderness Reserve), roughing it with tartan is a way of life. From left: Model Rebecca Leigh wears a Prada coat, $2,200; select Prada stores. Model Anok Yai wears a Prada top ($1,060) and skirt ($2,340); select Prada stores. Documentarian and writer Leon McCarron wears a Balenciaga jacket. Zoologist-adventurer Luca Bortali wears a Marni coat. Fashion Editor: Lucinda Chambers.