Unless they build in a trip sensor.The chargerOS on those crash and you have 3 devices barbecued and probably you house is gone too. Hard to think that Apple will launch a device with such poor antecedents. It will not easy to build trust.
It's not pointless if they create new tech-based on a new solution. Problems like this birth ingenuity.Does it will support 2 or 3 watches at same time? If one can combust the whole thing...If you can only place one Watch, then the whole design is pointless. Just do as everyone else and show the specific placement point for each device.
Doing it how everyone else has done it is the opposite of Apple's MO — it always has been — for better or worse. Apple has said many times that if they have nothing to add to a market segment while meeting their profit margins, they just won't compete in that market (see: AirPort, Consumer-level Monitors, printers, and tones of other stuff). Apple will not make something that already exists unless it does something the other options cannot do (See: Airpods with W1, XDR Monitor with Reference modes at a Sub-7K pricepoint, Apple Watch with tight iOS integration, FaceID with a high-resolution dot-matrix IR then not found in other mobile devices, etc,).
People who say "just doing it like everyone else" just don't get what Apple tries to do.