Nog wat huiswerk gedaan:

(Uit:
De Gentleman, Bernhard Roetzel.)
Covert coatA knee-length, shower-proof fly-fronted topcoat in
Venetian twill, generally of a pale stone color and often with toning velvet collar and detailed with three of four rows of stitches three-eighths of an inch apart at its sleeve cuff and bottom hem. The stitchings are holdovers from the time when reinforcement was needed to protect the coat's edges from wear in the thicket.
VenetianA fine worsted twill cloth where the warp is almost on the surface of the cloth, and the weft goes to the back. The name is taken from the resemblance noted to silk venetian, a cloth of real artistic value that was made in Venice. The cloth is smooth-textured dress worsted and made of wool or cotton. In wool it is used for suits, trousers and topcoats.
Covert clothA midweight overcoating constructed from two yarns of different colors in warp and single color in filling, giving a twilled, mottled appearance. Derived from the French
couvert and associated with the riding coats worn by horsemen going into the thickets or "couvert" where the pursued game takes refuge. Covert cloth's classic shade is a tan with a drab olive cast. Used today in its original 16- to 18-ounce weight for topcoats as well as lighter-weight versions for dress or sport trousers.
(Uit:
Dressing the Man, Alan Flusser.)
Als ik het goed begrijp, wordt een covert coat volgens Roetzel (en wie-is-Will) dus gemaakt van covert cloth (waarbij
covert volgens Flussers definitie niet op een verborgen knopenlijst slaat, maar via het Franse
couvert op de bosjes waar de opgejaagde dieren tijdens de jacht 'dekking zoeken'), maar bij Flusser van Venetian, wat toch iets anders lijkt te zijn. Hm.