No it would not be possible. The economy of scottland is in the trillions of dollars, while the market cap of bitcoin is under 10 billion dollars. This is simply not feasible.
Also if scottland were to use bitcoin as a currency then the price of bitcoin would go up so quickly that there would be too great of incentives to attack the network verses the costs to attack the network that bitcoin would be destined to fail.
I love this argument.
Additionally why would Scotland's government accept Bitcoin when they have free reign to keep printing fiat and inflate the money supply to pay off their debts? Governments do not give up power. Bitcoin is the people's currency.