I had glass surface skimmers, and they eat small shrimp even if they don't go below the surface of the water. You can use a net or something, but that hinders the performance of the skimmer. My main reason for no longer using skimmer intakes is they are super hard to clean (where the pipe to the canister meets the vertical piece, and I had two break from trying to remove the bottom piece for cleaning as it was getting clogged. Bits of sand get in that glass on glass joint and causes it to be super weak.
I then went to a regular surface skimmer (Eheim and Azoo). Eheim came broken. Azoo was my preferred one, and I set it on a timer so the shrimp that were caught could swim out of the skimmer every few hours. As
@Asteroid mentioned, it does hurt the tank aesthetically having that extra piece of machinery in there.
My favorite solution so far is just running an airstone 24/7. It allows you to really blast CO2 and minimize equipment in the tank, plus you don't have to worry about shrimp being sucked up at all.