Gil Hibbin Jackal knife - Questions about casting knives

I was approached by a friend who has an original Gil Hibben Jackal and he wanted to know about reproducing it in a resin.

Since this piece has such a find point on the upper blade, would this even really be castable in resin? I was thinking about smooth-on Task series, but I'd like some other input incase some of you pros have some details on casting items like knives with fine points to make sure that I don't end up with broken tips due to the resin snapping or something.

The knife is most popularly featured in the Buffy TV series and Star Trek Nemesis.