effects icons

[Trei]

When I use Stalk, I get the Stalk icon on maintained spell window, just like when I use Hunt or Blade-flurry or Pathfinding etc.I'm maintaining stealth on myself.When I use Impale on a target, I don't see any icon.Initially it made sense, I thought, since the debuff effect is on the mob not me.But when I use Vex, I get the Vex icon on the maintained spell window.That kinda made sense too, since a debuff would have a duration..... right?So why is there none from Impale?Both are wpn-resist debuffs no?Could it be that the Impale descript is wrong and it does NOT do pierce debuff, but simply an armor-piercing hit instead?ORCould it be that Vex is currently debuffing ME?