In reply to GridNorth:
> (In reply to baileyswalk) I specifically noticed that Joe clipped both ropes into the gear.
Any chance they were using twins, not halves?
In answer to the question-
Taken from another forum;
"In response to a specific query about this, Mammmut had this to say...
"you had a question on your Mammut rope Phoenix 8mm and whether it can be used in twin and half rope technique in one single pitch. This is the case, you can always clip the two rope strands as twins, then split them as doubles, join again etc. This is exactly the advantage of half ropes compared to twin ropes where you always need to clip both ropes."
Hope this helps you,
best regards from Switzerland,
Productmanager Climbing Equipment
Mammut Sports Group AG, Birren 5, CH-5703 Seon"
And again;
"here's what Mammut has to say about the subject in our rope booklet: "...here you have the choice between twin rope technique, where both ropes run parallel through the protection and half rope technique, where the «left» and «right» ropes run separately through different protection points...". (incidentally that is available here, there's some good info buried within...
http://www.mammut.ch/images/Ma... ) Speaking only for Mammut, we generally don't certify our ropes to more than one standard because there is a very real concern that people make assumptions about a rope based on the fact that it is marketed differently, that often don’t really hold true. As an example, our Serenity 8.9mm single rope was initially introduced with both single and half rope specs and many people assumed that it was “more durable” than a thinner half rope, when the reality is that it was far less durable than our thinner Genesis 8.5mm rope.
In general we would rather steer people into using their ropes in the manner that will result in the greatest degree of utility for most people, which is why we have shied away from dual certifications like this. It isn't right or wrong, but my sincere belief is that more people wind up with a rope that better suits their needs as a result. Hopefully that adds a bit of perspective, but please fire away if it raises still other questions."