I will keep saying this until I am blue in the face. Fiat and Bitcoin will not mix, the banks will never allow it because it will make them obsolete. What part of that do people not understand? Bitcoin was designed to replace the fiat system and here we have people trying to integrate the two, LOL. It will not happen!!!! Make no mistake, this will be an all out war between the banking system and Bitcoin.
Without banks , bitcoin wouldn't have reached 1000$.
90% of the trading is done with money sent via banking systems.
And don't fool yourself , even with fiat money gone , banks will still be there.