Maybe this "fingerhook" isn't a fingerhook at all??
It could be some kind of hook to prevent that an attack with an opponents blade (parried with the edge of Michael's weapon) ends up in the fingerzone whoever held Michael's sword....(like the protrusions of a "sai" or "sikoe-sikoe", but than smaller)...
I wouldn't hold my finger above this hook when being in a bladefight.
My fingers would be behind this protrusion, and I would try to parry all attacks with the edge of the blade....
But on the image I can't see if there is enough space to hold the handle behind this hook with the whole hand...
Maurice
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