Roperunner is nice to climb on, smooth and easy to transform between double and single line climbing. But. It’s not that safe. Later in this tree, I did a bit of decent. When I reached the branch in mind the runner kept descending after I released it. Not nice. So the runner squeezes the rope quite flat. It did the same on my old rope, Kernmaster, but it seems that the Samson Velocity can be even more squashed until it just keeps slipping through.
I adjusted the runner a bit, and it worked fine after that, but it feels a bit sketchy.