When standing on an extended grapple leg, and you turn it off, it retracts and you go down (which is helpful when that's all you have). When a separate arm-grapple is hanging on to an anchor, it pulls you all the way down then snaps you back up, instead of the foot grapple releasing and pulling up to you.
When standing on an extended grapple leg, and you turn it off, it retracts and you go down (which is helpful when that's all you have). When a separate arm-grapple is hanging on to an anchor, it pulls you all the way down then snaps you back up, instead of the foot grapple releasing and pulling up to you.