Hi Minih,
As long as Eusth VR is installed it will work with the standard launcher as well. So to try it out install his mod just don't run the VR launcher and it should work.
PS I will hereafter update my plugin on Hongfire's mod thread.
In Plugins. You can notice that it's on by trying to turn gaze off (press 1). If you can turn gaze off (meaning she now looks straight ahead instead towards camera), then it's not working. But the effect is pretty subtle. If you are really close to her face you can see her eyes switch from...