At least for the Really Sharp Pair of Scissors sword. I got the augment unlocked and was testing it. When I got injured and slashed enemies nothing happened. I was still in the red and needed to not be hit for a while to heal up. Tried flourish attacks too, and also seems to have no healing effects. Either the healing is so small or it's broken. Anyone else try it before? I remember the same augment in fable 2 and it worked well.