unless I am very much mistaken, my understanding (explanation I found and received by asking here) is that DE coils have only single coil, not two, and it is always powered by cpu which control the voltage, so you can't fry your flippers even if you hold it without EOS switches. then again if your flipper board is hacked I guess they could have in theory just override it and connect with 50 volts directly so there is no low holding voltage.