It is one thing to be drip-proof and quite another to be water tight. Satellite switches are a lot less sensitive to heat and moisture than are POE switches that use convection cooling.
POE switches not only perform switching functions but they also include power supplies that provide up to 10 watts per port.
Used to work at a drive-in theater,came in to start getting ready to open for the nite.Go in to the projection room and there's water pouring out of the service panel,WTF,a little gully washer storm had just gone thru.Anyway,I killed the main and took the cover off the panel,there's water coming out of one of the mc cables that fed a security light,pulled it out of the panel and set up a fan to dry the panel out.Traced the cable to see which light it went to and went up on the roof to check it out.Here's the cable pointing straight up on the mast,no box,and a wad of electricians putty laying on the roof ,I fixed it the next day,properly.Its crazy to see water dripping out of someone's IP device
Remember that at some level, you're leaning pretty hard on the switch to consolidate much of the camera traffic into a single port as it travels from the switch back to the DVR/NVR. When you home run the cameras, each has direct access to the switch built into the recorder. Putting a switch in the middle bunches things up quite a bit.I am trying to upgrade my system up to 4k to see what it can really do.