No, You won't. Such arrangement while not ideal is used quite often in national events and even in some international ones. I'm pretty sure some IRC/ERC events had the same stages in different direction one day and another day. Here in CZ parts of some stages are used in different direction in Rally Hustopeče for example (again in different leg). Even Barum sometimes uses same road for shakedown and than in opposite direction as part of one stage (not in last two years but before it was sometimes like that).

On the other hand I agree that if such scenario is run in just couple of hours it would be pretty difficult to make new taping, move all spectators, beertents etc. to new safe areas (I don't think that You can create a universal setup for both directions) and to clean some dirt from cutting in opposite direction.