As much as I'd personally enjoy this, and I only play as a warlock.. It's not gonna fly. The gun is clearly (imo) the best scout rifle already (with overflow activated). And the warlocks already have the only secondary weapon that can change elemental damage types with susanoo (unless I'm incorrect). Without overflow the gun is merely mediocre. But the combination of Tlaloc and susanoo is pretty useful in any situation.