pantheraba
More biners!!!
Great question!
There isn't anything about those rings that would make me buy them over a block. That said, if I had a set I'd use them. I just prefer to have blocks on hand that can be set mid line and taken off. I doubt the friction gained at the top of the tree is significant enough to make much difference in loading. If you're pushing limits of your rigging that close you should re evaluate. Disclaimer, I didn't watch much of the video.
It is an interesting tool, and if a highly skilled and experienced climber such as yourself vouches for them, that gives a lot of credence.
Im surprised they wear so little, apparently that hard coat anodizing counts for a lot.
Probably my next rigging purchase. They look perfect for my kitx rings have there place, Ive watched Bixler use them, Ive ran the porty, they work fine...
I like the new ISC 1/2 pulley so far, midline attach and sooo light
Antal is quite the resource.