A good question and an excellent answer.
In my short experience with kerises, I've seen blades bent at the
pesi (shaft), just below the
ganja, to get a good angle / 'feel' (rasa, roso) of the ergonomics of the blade. With the ensemble, doing a few thrust strokes and parry, one feels the balance and better control of the blade's movement
I've seen mostly on straight blades with the hilt firmly attached to the blade. There are occasions where I've seen on wavy blades as well. There are always exceptions.
