As long as the right concept wins - yes.

I think the one aspect that has the potential to kill the whole concept is the limit on how much one person can own. There would be little to no point in using it, since the potential advantage of no fees or bank nonsense is more than offset by the inconvenience of not being able to get my salary in it.

If there is no limit, we basically nationalized commercial banking, or at least eliminated the concept of banks providing convenience as opposed to interest as a service. I'm not sure if that's a bad idea, given that we seem to have a major debt crisis every ten years, usually stemming from insane lending from banks. Maybe not all at once though. My uneducated opinion is that it would be great if we could impose a limit, and gradually raise it until it reaches a point where it is meaningless.