[Rolando]

I agree with @TippetsTX, but also think it have a place in most campaigns.

A naturalist doesn't necessarily know all environments the same, I as a GM would add some penalties to a naturalist from the mountains to rolls related to a desert environment.

In the same way I would add some penalties to a priest from your average occidental monotheist religion when dealing with oriental ghosts or Mesoamerican ones. As spirits have many traits in common knowing a lot about some may help with the others.

Cidri is big enough to have godly influence in some parts and not in others I think.