Traders will be speculating that crypto commodities will rise.
So bitcoin price is likely to go up.
But I am skeptical that even a small portion of Greek will buy bitcoins because it does not seem popular over there since it seems it has a ponzi scheme reputation.
And the volatility again does not make it a good store of value, as alaways.
So let us bet that they will be turning to NuBit instead, even a tiny portion 
But beyond Greece, the crisis will spread to EUR and USD, I feel by Sep~Dec 2015.
We can expect a devaluation of the EUR and USD.
Now, it is a great opportunity for NuBit to show its colors.