Saved about 14 pounds compared with steel. I bought Amsteel Blue Dyneema braid to do those, but didn't want to try it on the jumper stays. I did my own splicing and used it about 2 months but noticed considerable abrasion where the battens were rubbing. The wear was a long way from being a concern but I should have used Dynex Dux. The Amsteel Blue wasn't suited for the job -- and the "constructional creep" was enough that I had no more adjustment and had to re-splice the lower connections. After that I needed to do it again, and decided to just swap the steel back in. Just a lack of confidence in my own experiment, although I was quite sure that (based on specs) it was well oversized.

The new Dragonfly boats come standard with synthetic shrouds and more CF in the mast fittings. They're also a LOT more expensive.