Probably a no brainer Armor Master Question...
"Armored Defenses: At 5th level, an armor master gains DR 1/— when wearing light armor, DR 2/— when wearing medium armor, and DR 3/— when wearing heavy armor. At 19th level, this damage reduction increases to DR 4/— when wearing light armor, DR 8/— when wearing medium armor, and DR 12/— when wearing heavy armor. This damage reduction stacks with that provided by adamantine armor, but not with other forms of damage reduction. This damage reduction does not apply if the armor master is stunned, unconscious, or helpless."
"Stoneskin: The warded creature gains resistance to blows, cuts, stabs, and slashes. The subject gains DR 10/adamantine. It ignores the first 10 points of damage each time it takes damage from a weapon, though an adamantine weapon bypasses the reduction. Once the spell has prevented a total of 10 points of damage per caster level (maximum 150 points), it is discharged."
If I have a 5th level Armor Master in full plate (3/-), but also have Stone Skin (10/adamantine), do they stack even though Stoneskin is a spell, not actual armor, which is what I assume the Armored Defense ability was meant for ?
