I certainly like it - as Jarvist said, we got some fairly early on and it's lasted pretty well.
It seems to be fairly flexible without being too loose/soft.
Sizing did seem a little odd.
IIRC, the 10mm was nominally ~10.4 and the 10.5 was 10.7, or something like that, and they certainly seem fairly hard to distinguish without looking at the markings (and remembering which particular sequence of black and green threads means which size).
We recently bought some of the core/sheath-bonded 10mm, and I think that's supposed to be basically a straight 10mm - it certainly looks/feels more like an 'Edelrid standard' 10.
That's currently unused, awaiting decisions on how to slice it up, so no idea how it compares in use.