This is a very interesting subject, which I am following quite closely. There are a few dealers here in Peru, who are internationally based and subject to a thorough vetting, could be a fantastic way forward for the transfer of larger sums of money at a small cost than present. An example being http://cambistabitcoin.com/
The rates are a little high at present, but I am sure these will fall as they become established and as you say Tom this will happen. Even the present rates beat the banks and government charges. It also opens up the online trading for the man in the street who only handles small sums for general purchases of consumables.