Well, I don't think Appletun's relationship with Darm is all that bad. Even with no Yache Berry, you still have north of an 80% chance to live a Banded Icicle Crash, and Draco Meteor *can* KO back after Rocks.
Clearly, Appletun doesn't check Darm, but I think that's okay. Apple Acid + Draco +...