Has anyone had any experience with the ultra thin / light micro line?

By reading all the posts it would seem that a chute might be better from above the 30th or so floor but the static line below. Mike... what do you think is the lowest floor a chute would open from?

One advantage that a rope may have would be that others could use it (Benmann)... would this be posible w/ the ultra thin line? Or would it simply cut / burn there hands causing a fall? Benmann?