I'm having a lot of issues trying to use my Index controllers, and realize its probably because the way you have the controls bound causes the finger sensors to act as a button input, as a result of Steam VR trying to convert the controllers inputs into equvakent Vive wand inputs, but they aren't one to one.
So I guess the question is, do you plan to add Index controller support? I didn't think this would be an issue since the game is also listed on Steam, and I'd rather just wait for controller support, instead of trying to dig out my Vive wands from whatever box I have them packed away in.