It would depend on the aircraft you fly, and the rules of your operator.
For the B737 that I fly, our rules, which I believe are a U.K. CAA requirement, are that anything below cat1 minimas have to be an auto-land, so we brief cat 3 auto land and cat 1 reversion available meaning that if at the OM/1000 feet the RVR is at or above cat 1 minimas we can descend to cat 1 decision altitude and land manually if an equipment failure precludes an auto land.
Boeing, and some regulatory authorities, allow the 737 to fly manual cat 2 landings in which case it would be possible to brief cat 2 reversion in the same manner if cat 2 RVR was available at the approach ban point. I’ve never really understood the CAA saying no manual cat 2 approaches for the 737, as they allow them for other types. Boeing say that cat 2 single channel manual approaches are allowed, and even if you disconnect the auto-pilot below 400 feet rad alt when the aircraft has trimmed itself nose up on a dual channel approach a manual landing is no big deal.
Obviously operating with a HUD with manual cat2 or cat3 is different.
Don’t know if that helps.