Now if on actual arrival you don’t get the matching RVR, you can still fly the app to the da(h) with a high chance of GA.
Not under EU-OPS, you can't, at least. Where do you fly?
(Ref EU-OPS 1.405 - "...The commander or the pilot to whom conduct of the flight has been delegated may commence an instrument approach regardless of the reported RVR/Visibility but the approach shall not be continued beyond the outer marker, or equivalent position, if the reported RVR/visibility is less than the applicable minima....")