HP704 / iPad interoperability

[hemme]

I'm pondering to buy an HP704 because of the great action, bluetooth audio and bluetooth MIDI.

I wish to use it in conjunction with an iPad Air with apps like Galileo2 and Camelot Pro, redirecting audio from the iPad to the piano via bluetooth.

On the product page of Roland website there's no "MIDI implementation" pdf to be downloaded, so I have doubts about the overall MIDI stuff.

What's your experience about MIDI and HP704?

I can't even find in the Docs if it is compatible with Piano Partner2. Do you know if it is compatible?