Regarding In Command and control of that on demand water heater via the Display Commander is unlikely at this t8me unless ASA Jensen has upgraded the firmware and floor plan to accommodate the new IW60
You can of course pick up the necessary 12 volts DC off the BCM provided the current draw from the IW60 is within the limits of the existing OEM water heater wiring to the BCM
Image of BCM on the latest version... other older versions with different BCMs also have water heater terminals but different pin connections
The IW60 does have 3 options for control with one of them being a simple wall mounted on off switch.. the other two options have more features for control of the IW60 and Id want that additional control capability if Inwere installing the IW60 unit..
Also be aware the IW60 is propane only.. no 120 VAC mode
Link to Airxcel and toward the bottom you will see the 3 control options available
https://www.airxcel.com/rv/suburban/...d-water-heater