| Maezer |
Pathfinder Adventure Path, Lost Omens, Rulebook, Starfinder Adventure Path Subscriber
I don't see how there can be any question. The last sentence in the description in the Pathfinder chronicles Campaign Setting states: "Adding an armored kilt to heavy armor does not provide an armor bonus increase."
I don't remember any errata to it. And I don't think it was reprinted in Ultimate Equipment or Inner Sea World Guide. So I don't see why it would have changed.