My beef is with the fact that the battery powered switch wants to be paired with the thing it directly controls and cannot be used alone with it just controlling something that is on the other side of the tradfri gateway. The five button round one apparently can be used for that, but the two position square one can't.

By the way the tradfri gateway is weird piece of hardware, the thing is mostly empty and only contains small board with apparently the same RFSoC as all the other tradfri peripherals connected somehow to ethernet PHY…