I have used the mDot with a Microchip RN4020 BLE module and have been able to use this to create a LoRa with BLE temperature sensor using one of the built in profiles. For a laugh, the probe was advertising itself as Rectal Health Thermometer!
I was intending to use a bluetooth module as a way of configuring and managing the sensor but the BLE profiles don’t directly support a UART mode. The RN4020 does support a Microchip version of the UART and requires code on the mDot to actually make it work properly.
Andrew