I absolutely adore watching agatha christie's murder mysteries (poirot is my favorite). In so doing, i spotted a skirt like this on one of the chic' ladies who was deeply entrenched in the sinister plot. A slick pencil skirt shape with a twist - in the back is a nice deep "v" godet where the walking slit would otherwise be.
It adds just a hint of drama to an otherwise classic skirt. Also adds a nice bit of movement when you exit the room. We now use mood fabrics nyc for our supplier.