Dont know. Should be easy enough to test. Open the xxx.jsm (the controller you want to test on) file in the settings folder with notepad. Scroll down and find a button that has an obvious action tied to it then add another action ie ", gear", save it and then load up the game and test it.
If it works great!, if not remove the edit and install "Voice Attack". It does both voice commands and button pushes I believe so you should be able to get 2 or more actions to a single button throw. 10 commands are free, $10 gets you unlimited commands.