I do have a system of Xiaomi (Mijia) gateways, sensors (both Mijia and Aqara), and light switches (Aqara).
I am now replacing the Mijia gateways with Aqara Hubs to gain homekit compatibility (I read here all sensors should appear in the apple Home app).
I am thinking however to add some Ikea Tradfri bulbs. I read on internet they work with the Mijia gateway, but what about the Aqara Hub? Did you ever try that?
Thanks a lot