I have a good guess at what you're thinking. You want to know what it's like to fall on an 8mm double rope like this one. I own these ropes but can't answer that question because, quite frankly, I'm a bit scared to fall on one of these. I've been climbing with a pair of these for a few months now but have always clipped them both treating them as twin ropes because the thought of my 180lb frame falling on one of these clipped separately makes me wince and I actually don't fear falling normally. What I do really like about them, though, is the weight and the feel. They flow like a hot knife through perlon in my ATC-Guide device in autoblock mode yet autolock just fine if the second weights the rope. However, because of the small size, I think, they do have a tendency to loop on themselves while feeding slack from the flaked stack which does get annoying. Bottomline: If you're planning to get a set to treat as light twin ropes, these are quite nice. But I'm still quite a bit leery of the massive stretch they're sure to produce when fallen-upon while being clipped separately.