1) From looking at Insteon's page I would say not. It is compatible with a large number of devices through IFTTT but it seems Insteon does not support that yet.
2) Yes, it's very flexible, you can even trigger different alarm sounds and events depending on where something is detected
(and even the type of detection vibration, open, movement etc...)
We went into soft-launch mode yesterday so you can check out the whole campaign here www(dot)igg(dot)me/at/kibbi