i'm assuming that some of the landscape for cyrodiil will be a deep gulch or valley, and so could be a death trap in a siege. What if there was an item to be bought, like a little kit or something. And if you were to fall off a ledge you could use the grappling hook to secure yourself and to slide down to a safe length to drop or just to the ground entirely. It doesn't need to be an amazing animation, just a straight up shot and if there is a collision object in its projected path, it would just attach to it and viola. it would also work well for a strategic retreat.