New member here who is considering purchase of a 2026/2027 Vienna with the gen delete package. One issue I have is that all of the USB ports in the motorhome are only powered when either plugged in or the inverter on. We do some boondocking and in our current motorhome often turn the inverter off to conserve power. But during this time we would still like the ability to charge/use some of our devices while plugged into the USB ports. Have you found this to be an issue?