Yes, it is very good if your wrath can last 20 +/- shots.

P/S
Yes, you can do stutter step with shortgun.
But need to change keyboard every few months. 
I'm just lazy to spam the shift/space bar.

oh OK, but saw some video out there showing how fast it helps on Cruz due to natural slow attack speed on 2H flail.

BTW still can do minor stutter step in front of mobs right? Hee hee hee.

I've been in shotgun build for 3 days, still wonder how u all manage wrath spending without primary skill. My wrath always ran out after 20 +- shots. (AC rune use Embodiment of Power)