EIB support is quite complete. There is nothing left on our 'todo list' for EIB, and we have a test home with thousands of EIB devices and it works well--everything from lights, drapes, pools, water fountains, pools, hydraulic lifts, gates, alarm sensors, sirens, garage doors, climate systems, etc.
Regarding X10, we handle lighting systems completely (ie outgoing messages), but we have another user who needs incoming events (motion sensors). I think he will let us use remote assistance to access it and test this code--so it should be done soon.