I don't see much point keeping 6+ months worth of emergency fund expenses in a bank account when any decent exchange allows you to convert BTC to fiat and get it to a bank account in a day or less.
Even before Bitcoin, I never bought into the idea of an 'emergency' fund bank account anyway. I mean, in the rare instance of an actual unforeseen emergency, that's what extended credit should be for (not for non-emergency over-indulgent expenses).
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