Awesome, this actually looks like something that would be believable if it were used by a race of tribal people living in a marsh. Not very made out of any advanced materials, or made out of any materials hard to find, but effective looking after hundreds of refinement. Nice.
It's less farfetched than you think, that sort of hook is exactly the sort of design you would see on medieval pruning hooks, which were utility tools used to lop through thick branches (and vines, in the Argonians' case). English peasants then figured out that if somebody's trying to kill you, a pruning hook does a more than fair job of lopping off limbs as well.