[Snake]

I really believe the same way it's impossible to do 0 damage to something, like it was changed a long time ago, should also work for heals. It's a sound change, imo. And helps people not metagame Vampires that well.

Though, I believe that healing reduction in general shouldn't affect heals that are equal or under either 8 or 10 HP. This could easily be a trait that evolves from Stability.