So, a related rules question:
If I went with a Daring Champion Cavalier, Champion's Finesse says:
At 1st level, a daring champion gains the benefits of the Weapon Finesse feat with light or one-handed piercing melee weapons, and he can use Charisma in place of Intelligence for the purpose of combat feat prerequisites. A daring champion also counts as having the Weapon Finesse feat for the purpose of meeting feat prerequisites. This ability replaces mount.
Now, Slashing Grace says that you can take a slashing weapon, like a longsword, and treat it like a piercing weapon, but Slashing Grace requires Weapon Finesse.
Now, Champion's Finesse only gives you Weapon Finesse with a piercing weapon, so since the longsword is slashing to start with, would I be unable to take Slashing Grace with a longsword? Since I'd need the feat in order to qualify for the feat?