Lord of the wilds and Lord of Horrors, treat cast on minon death differently

Lord of the wilds states: "Non-minion skills have 50% less reservation efficiency"
Lord of Horrors states: "12% increased reservation efficiency of minion skills"

Lord of the wilds treat cast on minion death as a minion skill, does not increase the reservation, which is correct.
Lord of Horrors does not treat it as a minion skill, does not decrease the reservation, which is incorrect.

Came here for the same issue. None of the minion persistent skills seem to benefit from the increased reservation efficiency. Summon skills vary from gem levels, but fixed cost skills like Grim feast and Cast on minion death keep the same 30 spirit reservation regardless of the node.