Can an Aegis Brawler using Hardened Strike or Cestus astral suit mod use Bleeding Attack feat without Improved Unarmed Strike?
Hardened Strikes: The aegis is considered to be armed even when unarmed, does not provoke attacks of opportunity when making unarmed strikes, and his unarmed strikes deal lethal damage. In addition, the aegis’s unarmed strikes can deal slashing or piercing damage, chosen at the time the customization is selected, instead of bludgeoning damage.
Benefit: While wearing a cestus, you are considered armed and your unarmed attacks deal normal damage. If you are proficient with a cestus, your unarmed strikes may deal bludgeoning or piercing damage. Monks are proficient with the cestus.
Bleeding Attack (Combat)
Your unarmed strikes cause your opponent to bleed.
Prerequisites: Improved Unarmed Strike.
Benefit: When you damage an opponent with an unarmed strike, you deal an extra 1d4 bleed damage.
Special: This ability does not stack with other special abilities, attacks, or items that allow theyou to deal bleed damage.