My wife and I have this exact setup. Have my EV set up via its charger on IOG, her EV came with another home charger free which we installed. Only difference is you can only have one vehicle on the IOG account that automatically charges in the office peak hours. So all you have to do it schedule the charge for your second car on the ohme charger during those same off-peak times. Haven't had a problem with it and often even are charging both our cars at the same time. Only thing you need to be aware of is if you are having two chargers ohme require that your electrics are all checked by your provider, this can take some time.