Does-it have a lockscreen and is it reasonnably good in term of security? That would be the only incentive for someone who want to keep handwritten notes without having to lock the notebook in a safe every time it is left unattended.

I am not thinking security against state actor, rather people within same household/office who might have too much curiosity.

Yes. Assuming the Move is the same as the Pro, it's PIN-protected with hardware encryption at rest.