In Interface settings, mousing over "Display Name (Keyboard)" says that "Gamepad mode can be changed separately in Gamepad settings" but I can't find said Gamepad settings anywhere. Maybe they haven't been added yet?
In Key Bindings, "Interact/Jump" isn't available (allows you to use same button for both Interact and Jump, depending if you're aiming at an interactive object or not). By default it's set to A for Xbox 360 controller, even though it's a hidden setting, but if you set A to something else then you can only change it back by reverting to default. The main problem here though is that "Hold A" doesn't work, as it will just do the Interact/Jump (I think because it's hidden, it's overriding somehow).