It's given out in a month. There's no infrastructure, no retailers accepting it, and we're talking about widespread adoption and displacing the national currency?
In most countries, it takes at least a few years to roll out the currency change, and that's given the government support, not a few hobbyists. Hell, for the general population even the very idea of a cryptocurrency is as alien as Martians.
So, nope. It might - just might - sustain itself as yet another altcoin, but getting the whole country to run at it is about as likely as it is for the world to turn to BTC as the primary currency. Which is "not very much, but maybe in ten years or so".
Rolling out a fiat currency and a cryptocurrency are vastly different. And the dispersal BEGINS in a month and there are multiple phases (I suggest reading the dispersal plan). And of course there's no retailers utilizing it now. But before long, someone in Iceland will be selling Alpaca socks for Auroracoin and it shall begin.
And most of us supporters are not claiming replacement of the national currency.