The problem with accessory cords is due to the size/strength ratio, they are pretty stiff. That makes it harder to do things like lashing, and it also means the stuff gets picky about knots. It is also hard to work with with decent gloves on because of it's small size. I've explored the stuff, and it is NOT in my kit because of it's lack of flexibility when I was testing it.

That being said, for what it cost me and what it promises, it is getting retested this summer.