I agree, Breath can be removed then replaced with no permanent ill effects, and is given away freely, and without trauma, with hemalurgy even if the "donor" lives they are going to end up with something equivalent to a big bleeding hole in their soul from having part of it forcibly ripped away. Which can't be good for their long-term happiness and sanity, and unlike Breath, the ripped off piece can't be replaced, except maybe by Act of Shard.