Sorry, I haven't tried it. I don't mean any offense whatsoever, but it seems to me too risky to try something that hasn't even been tested, where it comes to such a vital part of the operation - the login details.
Perhaps this should have been better served in the Beta forum, where we could have helped you develop it further?
Anyhow, just my two cents. Since I've not tried it, for all we know it might be a masterpiece