Reloop Mixtour and iOS without DC-in

Hi there,

I understand the Reloop Mixtour can be powered via USB from a computer. Is it possible to use in mobile configurations such as:
1)
Power bank/iPad charger -> USB-A to USB-B cable -> Mixtour
Mixtour -> iOS connection cable -> iOS device

Power bank/iPad charger -> USB-A to Lightning cable -> Lightning to USB 3 Camera Adapter (using Lightning input)
Lightning to USB 3 Camera Adapter (USB-A output) -> USB-A to USB-B cable ->
Mixtour
Lightning to USB 3 Camera Adapter -> iPad

I use the second option with my Launchpad and iOS devices. I hope someone have experience with the setup.