Legendaries on Engineer's Grenade Kit

[Derpy Melvy.2158]

I am currently using Aurene's Arguments on my Mechanist with pistol/pistol. However, most of the time I am camping on Grenade Kits. Wiki mentioned that the legendary projectiles will affect the standard pistol bullets and the "Grenade Barrage". So it means that I don't have Grenade Barrage as a part of my arsenal and that I rarely see the unique projectiles I was yearning for. I feel like crafting legendaries wasn't worth it after seeing this and Aurene's Claw on Virtuoso. There seems to be only little changes only. None of the Grenade Kits has its projectiles changed.