anyons involve a lot of sliding, scraping and general thrashing. Which ends up with a lot of scraping and thrashing of the gear and clothing upon which that sliding is done. Harnesses, shorts, wetsuits - they all get destroyed on a regular basis.
The NEW ShuffleButt2 offers the best protection (Vinyl Laminate) where it is needed the most (Leg Loops), while maintaining the more-comfortable 1000d Air-Textured Nylon coated fabric for the upper. Bonus for me is that it is a LOT easier to sew.