As much as the project seems to have good intentions, insisting that It's BitCoin, BitCoin is different doesn't mean your product is actually exempt from rules and law. Or that Bitcoin is all that different.
There is no reason someone couldn't build a similar project using traditional currency. But then they would run afoul of the many laws designed to protect depositors, investors, and the financial system writ-large. As someone remarks in TFA, holding the amount of currency on ones balance sheets this project would, if successful, is a terrible idea. It's ripe for fraud and abuse. There is a reason services like Gittip assist in transferring fund, and act as the debiter and depositor.
This whole thing is emblematic of the problems with Bitcoin culture, which seems to think it doesn't have to follow any of the rules. Sorry lads, if Bitcoin is currency, you have to behave like banks and investment firms if you are going to act like banks and investment firms.