We don't know much about A. Sauvage; but John has a feeling he may have a suit line. :shrug: Check out ASauvage.com in case more info is ever posted.
Sauvage is a British Stylist turned designer who's mission is to create timeless apparel that strays from trends, and 'This is not a Suit' is his inaugural collection. Check a brief interview with the man on Nowness.
(Oh and DE = Dress Easy.)