I added a new feature to my addon: Sample Chooser
It let's you change from common render samples and there's also a test render button which renders your scene with 1 sample and denoise it with the selected denoiser.
If you click on the buttons the rendering starts immediately with the choosen sample count. You don't see this in the video because there isn't any camera in the scene.
I turned off the denoising for the other samples because I always use the denoiser in the compositor, so I can tweak the noise a little bit in post. If you don't like it I'll create a version which let's you choose if you want to enable the denoiser or not.