If you assign the textures to the wall components, you have a better way to…
Vectorworks Tip 339- Assign Wall Textures by Component
If you use Wall Styles (with components) it is a lot easier to assign the wall textures to the wall components themselves, then on the Texture Settings, choose to have the textures By Component. This will assign the texture to the entire component, but it makes it easy to get the textures on the correct side of the wall.