In your very specific situation this might work. But problems that a lot of people would face: 1. unreliable local BTC exchanges that increase the risk substantially 2. local banks that will scrutinize or prohibit transfers to/from BTC exchanges 3. cheaper/faster/better options (e.g. SEPA) 4. in some countries it takes weeks to months to setup an account with a BTC exchange

On top of that, international payments are only a PITA because banks are lazy. Banks could easily make the process cheaper and faster if they were so inclined. If BTC ever gains ground in this market, it would not last for long.