Aye, this question has been asked before and I answered it. In fact, I just answered one today. MindWorX is making an "IsKeyPressed" boolean native which will register if a key is pressed. Along with a periodic event, it should work.
Nothing to do but wait.
There many work arounds. The spellbook thing doesn't work and the invisible channel still takes up a space I think... And if you hover over it, despite it not having a tool tip, I think it will still create the bar thingy. But it is less conspicuous as an actual ability with an icon and everything.