My mind is running rampant. Here's another thought. In our Alpha bee-line, we get Writing many turns before the AIs. AIs far to the South will be trapped so we are free to steal our 2nd (...and 3rd? (...and 4th )) worker without fear of reprisal, especially if we can decide which AI to attack early on. We can pick on a low-commerce AI, for example.
Now tell me what I'm forgetting.
EDIT: Gnejs when were you completing Writing relative to the worker build, when you went warrior-wb-wb-wkr?
You forget that all workers will be escorted
But if the opportunity arise, I thinks it's a good idea (against low-commerce AIs).