Maybe that would work indeed for the example shown on Stack overflow, for any objects that are symmetrically the same on both sides it could work but for example a block of 2x1 where the left side looks different than the right side this may cause problems - also it still would be mirrored, if we're building in Asset Forge keeping in mind that the direction of the arrow is North - and built to the East, it's weird that it renders in my game as West.
I can post more complex / in depth examples tomorrow if you're interested in seeing the problems occuring with different kind of models.