Candy hammer are even worse than feather wood ones, and those make some of the "best" weapon for a sherif, because it basically can't kill anything, not even small animals.
For cutting weapons, it has always been the final 'must have', which makes the whole HFS structure so appealing to most, the highest grade and best material guaranteed, making one of the best possible weapon in the game.
Slade hammers, I'm not sure.
It takes a really strong and big entity to be able to move at any decent speed, so maybe for orcs, but for lower strength species, like dwarves and humans, you would have to really need that extra power from a single hit, because it takes way longer to deliver it.