Good weapon to combine with Adrenaline Rush. I've used it on both human soldiers and had an enjoyable time. If I recall correctly, it has a surprising highly DPS at max fire; especially when you consider it's an AoE weapon.
It ignores armor penalties like all other projectile weapons.
My krentinel will run with a Stryker occasionally and squeeze off a round before melee to get near guaranteed AoE stagger. With phasics or disruptor you will stagger all humanoids with two or three rounds. Or go with cryo for the 'chilled' bonus with Incinerate.
Very good synergy with the TGI's extended assault rifle damage bonus from cloak.
The demolisher can have some fun with it too. Stand on your pylon and hide reloads inside your arc grenades. Not quite as silly as the Spitfire Quarksman, but worth trying once.
That's all I got. Except maybe the perpetual phantom staggering you get from this. Real nice to watch that happen over and over.