It's a good idea for SCHs to get used to Placing regardless of how they feel about overall HPS for two important reasons:

1. Using the Stay command is practically essential for micromanaging Selene, and is helpful for Eos as well, so might as well get used to managing a turret fairy's placement.

2. Fights like T7 sometimes force the SCH to become separated from the party, and a Heeling fairy will either not be able to reach targets or will heal sporadically as it tries to move and cast. Selene is also likely to buff out of range of melees when this happens.

When the fairy is Placed, I do find her more responsive overall. While I personally don't utilize <mo> Embrace (I've been targeting it manually for so long that split healing is faster for me without it), I spam her on the tank constantly except for a moment at the beginning of add phases, and Place is helpful.