Vue Native is definitely production-ready in my experience. I've used both, have apps built with both in production right now, and both are fine technologies. As far as I can recall, there's nothing in RN that you can't do in VN. Given that, I would say go with "the devil you know".

That said, the one downside of VN over RN is that there are a lot more people using RN last I checked, so there are likely more resources readily available.