I am using it all: PoE switch, then couple injectors where it is needed for some specific reason and then also PoE splitters (one cable leaving from PoE switch, going to splitter and then to 4 different PoE cameras, powering everything with one PoE output from switch).
I would not use WiFi cameras. Standard RTSP PoE h264 is the way to go.
I would not use WiFi cameras. Standard RTSP PoE h264 is the way to go.