But Maul is generally not depicted as using it, even pre-cyborg legs to my knowledge. Savage got hit by lightning on day 1 of training pretty much, I would think that Maul was hit by it/tortured/punished just as Savage was. Dooku apparently had it used against him if we're going by the "you must be hit by it to use it" explanation of the novel (which is a terrible explanation IMO). Savage got hit, Sidious himself had it used against him. So I wouldn't think that Maul just never had it used against him and never learned.