At this point, is anyone kind of concerned that doublades ability is still pretty worthless for him at this point? Never missing is nice, but his best moves so far are arguably
Swords Dance
Shadow Sneak
Sacred Sword
??? possibly a steel type move for dual STAB
and none of these have less than 100 accuracy except possibly the steel type move, and even then a move like leaf blade would be superior for him to cover water types.
Also, it's hard to think of what moves a sword could possibly learn with low accuracy, barring the obvious guillotine. Which would be banned instantly anyway and so be pointless.