In reply to mutt:
Ice Lines are really quite stretchy, which translates into a lower impact force on the gear - 4.9kN vs 6.2kN for the Mammut Twilight (skinnier, comparable weight). That said, the Cobras get 5.1kN, so there's really very little difference.
'Ice Line' is obviously just a name at the end of the day - people use them for trad, alpinism and all sorts.