No, never
Why never???
It can be used as a currency, but the only condition it will need to satisfy is the stability which is being seen since past few months...
We don't need those immediate spikes and then destructive scenes...
We need stability, and if this will be the scene and even if it reaches $1k steadily, it can be adapted as a currency, a currency which evaluates itself from time to time growing at a stable rate...