Sickles! Oh wow! I would never have though about that. I need to look into these. I always though Swords to Plowshares was for staffs and wraps.I don't have an "official" build yet but I'm thinking it would be something like this:
Non-humans lose a feat: either Improved Shield Bash or Quicken Spell.
Sickle variant: take Swords to Plowshares at level 6, Improved Critical Slashing instead of Piercing, and Precision at level 18. Normal sickles will become 14-20/x3 weapons; a few named ones will become 12-20/x3 (e.g., Widowblight, Tharkuul's Bane, Devourer's Reaping). Also if you decide to run in Divine Crusader, sickles qualify for Favored weapon bonuses with Axiom of Faith.
So with CHA being at 14, wouldn't that impact the freezes or spells DC's?