I have a Hiplock Gold wrapped around the seatpost/frame and an Abus Granite Extreme on the pannier rack. They weigh a ton but then so does the ebike. Cables don't seem worthwhile except maybe as a purely visual deterrent, bolt cutters will get through them in seconds.
Yeah seen those cables.
Doesn't seem any different between a cable tie and a cable lock. All they will stop is chancers.
The abus 6500 is on its way, and a d lock. Feel like two different types of lock will need two different tools and thus more of a deterrent