Can you run the same bank on two consoles? IE if somebody has cyber save editor and a japanese console, to move all the pokemon across to your local game with ease? Or is it a matter of sitting there and transferring them... one by one?
I'm pretty certain that you can only have one NNID to a Bank subscription. It really isn't that much work. I personally have Bank paid for on my NA 3DS. I use Cyber Save Editor on my Japanese cart and Bank everything that I want to transfer to my NA 3DS Bank (I didn't want to pay the subscription fee on my Japanese console since my NA Bank one serves the same purpose.) You can shift stuff by the box full that way and it works perfectly smooth since Bank itself does not have a region lockout.