How does that work? You transfer the money in BTC, you exchange that into real money, you open a new bank account, you deposit that money, the bank's anti-money-laundering detection sees a large deposit to a newly open account and triggers an alert, the bank locks you out of the account and asks you for a proof of income/tax payment, you have no explanation of where that money came from legally, they freeze your account and report you to their local revenue services, you're SOL.
Oh yeah, this isn't about large sums, this is about "I need money to live there for a month".
However, with a lot of BTC trading sites, you get money from real people's accounts, so its not that crazy as long as the amounts are low.