in essence, it's a customized RTGI version for Nvidia FreeStyle it has reduced sliders (quality, effect radius, intensity and fade out range) and is also embedded into the driver, so no transferring to ReShade. I don't think it's in competition with ReShade, as you tend to use either of the two and not together, and it doesn't have the extended features that the new RTGI versions have.
However, it's working on games that ReShade isn't working on, and it works out of the box, if you have an Nvidia card.