i asked, and because the IEC is with the Torus which feeds the whole system, it has a electricity running through it 24/7 anyway. The QX4 is on, the Torus itself is on, and the Transport PSU and Velodyne are designed to be on all the time (Velodyne in standby that automatically switches on properly when it receives a signal).
So in that regard, we have been fortunate not to have to play 24/7...however, I understand it might be 'better' to turn the whole system on. In any event, at around 288 hours (based on 24/7), it is sounding very impressive.
Still want to wait to hear how the very upper mids on piano 'settle in' and see if they pick up just a touch more weight.