When I was googling leader info I saw a few write ups on these, and the only take I got from it was they are a lot softer, and one pic showed actual braided fishing line, and from my experience the braided stuff is way stronger and softer. So I can see how there is no memory. But my take on that is seems like it would be "jerkier" in the air and a lot harder to roll cast.
Just my take on it from the little I have read on it, I could be completely wrong. And I'll definitely keep an eye on this thread for other opinions. Thanks for the post. Now we will have both sides to choose from!