Sang's Bane and Identities

[Wendigo]

The way Sang's Bane works right now is a little weird when you think about it. Vampire bites human, human knows they've been bitten, but isn't moved/disoriented afterward, and the Vampire is poisoned. So, no one moves, but there's an definite interaction... how are identities not traded in this exchange? They're both in the same square after the attack, and they're both aware of the consequences: the Alerts, at least, imply that.

I mean, A) you're not going to readily forget the face of someone who assaulted you more quickly than you'll forget the face of someone who failed to pick your pocket, and B) a vampire isn't going to forget the face of someone whose blood is poisonous and go back for seconds.