I saw the men's cassette in person, and I have the standard/original one. The leather and construction is a tad bit different.
Regular cassette:
-Leather: Has three layers of leather in each leather strip (that makes the large woven bag); the feel of it is softer, plush, and more luxurious; finish is matte
-Construction: Because of softer leather, I've seen cassettes where the leather strips has somewhat stretched out/ misshaped and kind of bulges a bit from the weave so that it is less flat. This is probably because the strips are secured but stitches on the edges of the bag, so they can move a bit within the weave.
Men's cassette
-Leather: Thinner leather with only 1 layer for each strip of the weave; finish is shiny but not quite patent. To me, this seems to have a more casual look.
-Construction: straps are more stitches across the entire bag, and not just on the edges (you can see it in the picture of the bag with the flap open). As a result, while I'm not quite sure how this leather would wear over time, I wonder if the rectangular structure of the bag will last longer.