The only other slayer I've seen on under 80 was on a lvl 75 I think, I've also heard that it's been done at lvl60 before but with nanomage, not sure if this is true or not, but nontheless I'm sure it would have been impossible before AI as AI makes up for 72points in nanoskills in my setup and that isn't including the 300hq abilities.
As for control, the slayer is in my control with mochams, I can take nelebs, helm, and some casting buffs off as well and still have control.
*edit* I am still working on this twink, and eventually when I aquire the above mentioned items I will cast the next slayer up. And of course more implant work..