Not the GP, but any supported BLE sensor [0] with a Bluetooth proxy ESPHome node should work.

[0] https://custom-components.github.io/ble_monitor/by_property#...

You'll laugh, but:

I'm using a Zigbee button from Samjin/Samsung/whoever-that-was which reads temperature, my Nest thermostat (via a convoluted-but-supported path to a remote API), and a couple of Amazon Echo Dot speakers (the integration of which is cursed, but it's easy to set up and usually works).

I was going to try to score some cheap BLE temperature sensors and use the Shelly relay as a gateway to bring those into HA (yeah, it does that too), but then the big mystery ball of tariffs happened and I lost track of that idea.