possibly some confusion here over the difference between 'statehood' and having a passport of that state? The many UK born and bred residents without a UK passport are not 'without a state', they have just not opted to take up the (expensive) offer of a UK passport. If someone who meets whatever Scottish nationality requirements that get established chooses not to renew a UK passport, I'd guess they will remain dual-nationality. Unless, like some countries, the new Republic of Scotland makes it necessary to renounce all other nationalities in order to become 'Scottish'? As in all these matters, we just don't know - and therein lies the crime in my view...