Dear friend, Anthony, the issue you raise concerns us time.
Although geared for filing abroad there is debate http://www.tsig.gr/lang-el/forum/index/8- in relation to bankruptcy and the possible return to a penny debate http://www. tsig.gr/lang-el/forum/14-/1195- .
However, if you think to turn the euro currency as in the case of return to avoid the drachma devaluation, it is quite possible, and foreign currency deposits to turn necessity into drachmas.