Shinta's page

I know what the general player base says. I have some friends that refuse to believe me, because the Rules do not SPECIFICALLY say it. The question is. Does Mithral give a total ACP of -4, or the written -3? Are the Masterwork properties included in Mithrals text, or do you add them in I'm looking to get someone Official and who can say so and no one can argue it, because they make the game.

This is their logic if you care to read it.

"[6:34:49 PM | Edited 6:35:50 PM] CV: Masterwork Armor
Just as with weapons, you can purchase or craft masterwork versions of armor or shields. Such a well-made item functions like the normal version, except that its armor check penalty is lessened by 1.

Mithral
Cost Weapons or armors fashioned from mithral are always masterwork items as well; the masterwork cost is included in the prices given below.
When worked like steel, it becomes a wonderful material from which to create armor, and is occasionally used for other items as well. Most mithral armors are one category lighter than normal for purposes of movement and other limitations. Heavy armors are treated as medium, and medium armors are treated as light, but light armors are still treated as light. This decrease does not apply to proficiency in wearing the armor. A character wearing mithral full plate must be proficient in wearing heavy armor to avoid adding the armor's check penalty to all his attack rolls and skill checks that involve moving. Spell failure chances for armors and shields made from mithral are decreased by 10%, maximum Dexterity bonuses are increased by 2, and armor check penalties are decreased by 3 (to a minimum of 0).

Items not primarily of metal are not meaningfully affected by being partially made of mithral. (A longsword can be a mithral weapon, while a quarterstaff cannot.) Mithral weapons count as silver for the purpose of overcoming damage reduction.
[6:34:56 PM] CV: This is 100% of all of the possible relevant rules
[6:35:17 PM] CV: Nowhere in here does it say that you don't get the effects of both, just that mithral armor is always also masterwork which has an effect on ACP as well."
[9:33:00 PM] > R: These are literally ALL OF THE RULES
[9:33:08 PM] > R: there are no relevant rules beyond what is posted here
[9:33:15 PM] > R: so these rules are the only rules we have to draw from