Many banks (or bank alliances) got their own pocket "westernunions". That may be the case. They may issue those coins in old school way (with guarantee deposits), set up fees as they like and use just blockchain mechanism to run it.
this is what i was thinking and it wouldn't be a bad idea..
the bank makes a coin. its not a minable coin, so they have access to them ALL.
how these coins would work is, say you want to send someone money.. you would go on their website and "buy" whatever money value you need..
now since these are based on bitcoin, they would probably work the same way, so you have a wallet. you can store them and send them and do whatever.
the bank would most likely set the base price for these.. altho there might be a market, why not ?
the way i can see the bank making money on this is if they charge a cashing out fee..