Please add water leak device support with the switchbot cloud integration. Thanks
Some of the Switchbot devices are made with Tuya components. You might want to try with the Tuya integration to talk to it.
This should be available in the Integration as you mentioned, but this might get your devices working.
I have tose on the way as well. As per the spec sheet they seem to support Bluetooth and Wifi. Please let me know if I can be of assistance developing the extension, for example providing logging data.
I also recently purchased a water leak detector, unfortunately, I was disappointed to see that the homeassistant couldn’t detect my new water leak sensors 
I will be following up on the update here!