Input Abstraction Question

If I am trying to abstract out my input is it wise to use event messaging for the left and right sticks on a controller? I am just wondering if there is a better way to handle this. The event messaging is great for things like buttons, just not sure if I should use it for the sticks. Since I am capturing input through fixedupdate, it seems like this might be a few too many messages.

    private void FixedUpdate()
    {
        _inputDevice = InControl.InputManager.ActiveDevice;

        _leftStickX  = _inputDevice.LeftStickX;
        _leftStickY  = _inputDevice.LeftStickY;
        _rightStickX = _inputDevice.RightStickX;
        _rightStickY = _inputDevice.RightStickY;

        LeftStickUpdate();
        RightStickUpdate();
        LeftShoulderButtonUpdate();
        RightShoulderButtonUpdate();
        Action1ButtonUpdate();
        Action2ButtonUpdate();
        Action3ButtonUpdate();
        Action4ButtonUpdate();
    }

    #region ANALOG STICKS

    private void LeftStickUpdate()
    {
        if (_leftStickX != 0.0f || _leftStickY != 0.0f)
        {
            object[] paramsArray = new object[2] {_leftStickX, _leftStickY};
            MessageDispatcher.SendMessage(this, InputEventNameConst.OnLeftStickUpdate, paramsArray, 0);
        }
    }

    private void RightStickUpdate()
    {
        if (_rightStickX == 0 && _rightStickY == 0)
        {
            object[] paramsArray = new object[2] {_leftStickX, _leftStickY};
            MessageDispatcher.SendMessage(this, InputEventNameConst.OnRightStickUpdate, paramsArray, 0);
        }
        else
        {
            object[] paramsArray = new object[2] {_rightStickX, _rightStickY};
            MessageDispatcher.SendMessage(this, InputEventNameConst.OnRightStickUpdate, paramsArray, 0);
        }
    }

i would say that for something as intensive and performance-depandant as control input, polling is a just fine way to do it.