IMHO,
We need to consider its size as an important factor. A knife with a 22 cm blade of that configuration is either a utility knife or a ceremonial one. It could work as a Dahomey Amazons' "razor" ( and I shudder to think of its use

) but could not
function as a Ram Dao unless the animals were very, very small. A symbol of a Ram Dao? A temple knife? A carving knife?
I just cannot see it as a weapon... Sorry.