I have installed bticino for many years, before meeting and becoming knx partner.
Frankly I consider it a system less practical and less flexible compared to knx, the only strong point is its ease of integration with audio video and great looks.
Also for those wishing to use that, provide for large distribution cabinet, since we need a large quantity of devices.
For example in a litle house (100mq) I install an 170 din modules and it's very full (audio, clima, system alarm, automation lights).
After I tried both ... I love knx.