It seems like the ultimate boss killer.
I don't see why you would use anything else than matriarchal spear, for the +3, and fastest possible attack speed. You're not using it for physical damage obviously.
It probably kills anything it touches, even with enemy 95% lr before conviction. But having played almost every zon there is, i can tell you that using normal attack (cs) gets quite boring after a few weeks, even if you kill anything in one hit. "tchk-tchk-tchk", it's like listening to a carpenter hammering in nails, fun for a while, but boring in the long run. Sadly. Or lol, probably more like a pressure nail gun because of the lightning ^^ "psszh-psszh-psszh" ^^ (Lol, since starting listening to bird calls, i have fun with phonetics ^^)
But yes. One other quite obscure hidden possible point to this build, is travincal runs. Probably kills them in 1-2 hits. I mean, you can do anything. Running lvl85 areas probably becomes the highest priority. Cowruns i would not do with it, getting overwhelmed.
I actually forgot, using charged strike, you do get the bolts, so there is some level of area effect. That makes it sort of viable for cows too.
But yes, last words; Any kind of spearzon is fun on paper - but i tell you, the defense and hit points, unless you make it 3000+ hit points, you're going to take hits and damage all the time and then have to play defensively. I know from hardcore experience. And that is contrary to the idea of melee, you don't want to back off from taking damage... you want to rush around killing anything in sight. And that is not my experience with any kind of spearzons, even 1-h (i know this is 2-h) cs zons.