The weapon is kind of a no brainer if you are a dps or don't have a hive weapon. The physical damage increase trumps any secondary stats on the law weapons.

At this point I am a drk, have a have a hive weapon, and a 180 chest piece. I will be getting the Alex pants, arms, belt, acc today. If I decided to go for the eso weapon I would effectively put me out of a chest piece for about another month either way. (Four weeks) so my plan is to get the eso chest, then head next week, and then Save for the weapon while getting Alex normal accessories to fill in the gaps. Just want to get rid of the law pieces ASAP.