Dervish Dance & Scimitar - Slashing or Piercing?

[Matt2VK]

In a encounter with DR/Slashing this question came up -

Does a Scimitar being used with the Dervish Dance Feat count as a Piercing Weapon or a Slashing Weapon?

Dervish Dance

Benefit: When wielding a scimitar with one hand, you can use your Dexterity modifier instead of your Strength modifier on melee attack and damage rolls. You treat the scimitar as a one-handed piercing weapon for all feats and class abilities that require such a weapon.

By RAW, it's looking like the Scimitar still does slashing damage.

By RAI, is it supposed to deal Piercing Damage?
Is there any posts that support this interpretation?

[Arachnofiend]

RAW and RAI it still does slashing damage. The last line is there so the Scimitar functions as a proper Duelist/Swashbuckler weapon; it means nothing for what happens when you whack a creature with it.

[Fromper]

Agree with Arachnofiend. That line is there just so you can use other dex-based weapon feats with it that sometimes require piercing weapons, even though you're actually using a slashing weapon.

[Torbyne]

Jumping on this as well, the feat specifies only feats and class abilities, not damage types. Though if you have a feat that adds piercing damage than you would be doing two types of damage at once but I don't think there are any feats like that.