Not local, but I’ve been using my withings scale for at least 5 years, and I sync the weights with its home assistant automation from the withings api, then plot the data on a custom health dashboard I made.

I’d love a local alternative, but regardless I haven’t had any problems with my setup.

For me, it didn’t prompt the upgrade when I went to the firmware page, but it did prompt for it when I went into the matter settings page.

I think Switchbot does slow rollouts, but if it’s not available for you yet you can just send them a message in the feedback page of the app and they’ll probably be able push the upgrade to you (I’ve done this a couple of times for previous matter releases).

It’s not thread-based matter to the vacuum directly, but matter over wifi using their Hub 2 as a bridge, but I just tested and it works! The vacuum shows up as a binary OnOff plug, toggling it on starts a cleaning session, and off cancels the session and returns the unit to base.

I should note, I had to update my Hub 2 firmware to V2.0-1.2, which also adds the ability to swap out the temperature and humidity sensors to other devices for being a matter bridge, which is nice.