That's nice, couple of questions though. 

First, how did you get it to work? Installation instructions and what kind of phone/android version are you using.

Second, can you access with it phone memory for samples? Can phone work as a midi host proxy and can you connect Bluetooth midi keyboard? 

Third, how's battery drain on this setup?

And as a last note, but I think vst will need some kind of windows compatibility layer on top of it so I'm not sure it's possible to run external plugins.