If I move into a battlefield with a unit equipped with Eye of the Herald and my opponent reacts with Gust to the move, do I still spawn a recruit?

No, you will not spawn a Recruit token.

According to RiftJudge FAQ #9629 and FAQ #11340, when a unit equipped with Eye of the Herald moves, its ability triggers and is placed on the chain. If you use Gust in response to that trigger to return the unit to your hand, the unit is no longer on the battlefield when the ability resolves.

Because the ability specifies that the token is played "here," the game must be able to determine the unit's location at the time of resolution. Since the unit is no longer on the board, the location "here" returns "null," and the ability resolves with no effect.

Sequence of Events:

1. Move: Your unit equipped with Eye of the Herald moves to a battlefield.
2. Trigger: The Eye of the Herald ability triggers and is placed on the chain.
3. Reaction: Your opponent plays Gust in response, targeting the unit.
4. Resolution (LIFO):
   • Gust resolves first, returning the unit to your hand.
   • The Eye of the Herald trigger attempts to resolve. It checks for the unit's location to determine where "here" is. Because the unit is no longer on the board, the instruction fails, and no Recruit token is created.