This kemono sylv version is optimized to the point that it can be used as a fallback avatar, with only 7400 polygons and a single texture you can have control of how you look 100% of the time.
It also has full features of quest version which includes mmd visemes and face tracking blendshapes (requires external setup)
Also if you have a custom texture for your sylv oc you can use this as uvs are compatible, just replace the body from the main texture and you are ready.