We used the 1GbE version in an outdoor setting to easily connect multiple sensors in a port within a research project. Good reliability and being able to extend and "split" the ethernet connection without additional power supplies was very convenient.

We did not integrate them into a UniFi ecosystem, just used the PoE and dumb-switch functionality.

Similarly I've had a 1GbE one installed in my loft for the last 3 years with 4×G5 Bullets plugged into it.

No problems, no fuss, mounting options are great - would recommend that approach to anyone installing cameras.