Eh, not so much. There are plenty of bosses that aren't immune to CC effects like stun. I've gone away from and come back to Incapacitating Strike on my NBs melee bar and it works well enough, especially after hitting max charge come the end of a delve. Even if it doesn't stun, it can still hit like a truck and anything it doesn't stun is immune to Soul Tether's stun effect as well.It isn't nearly as useful in PVE though, as the enemies you'd likely use it on(bosses and elites) would be immune to the stun, and probably the healing reduction.