Eu fui em frente e contatei o Outrider Studios através de sua página do Facebook e recebi esta resposta:
Conceal-ability is the big advantage. The other is that you can throw the weapon without using the Throwblade power.
Parece que é a extensão dos benefícios das pequenas armas.
Quando perguntados sobre a intenção, eles esclareceram:
...A lot of players do not use a +1 weapon as their main or Edgeforged weapon, but as a backup plan. You never know when you might need a small weapon to throw or keep hidden. We kept them as +1 instead of +0.
Our thinking is that you can kill someone even with a small knife, so the +1 was justified.