I'm not seeing details on whether the Lightning port is still available for docking & data. The 'specs' say that it uses the lightning port for power, but not if you can still plug in your own device.

I don't think you can because of this (from the site FAQ): How do I charge my phone with popSLATE?

There is a micro-USB charging port on your popSLATE that passes charge through to your phone so you don't have to take the cover off.