Beedrill just doesn't have the room for Swords Dance. It needs Protect even more than Mega Alakazam for a safe Mega Evolution, and Bug/Poison isn't good enough coverage to sweep reliably. I ran Knock Off for a little bit, but Drill Run is way better to take care of stuff like Lucario and other Poison-types. You miss out on hitting Crobat just a little bit harder (two Knock Offs hits harder than two resisted Poison Jabs), but you can't stay in anyway since Beedrill is more frail than wet tissue paper. I saw a Beedrill running Fell Stinger in RU, but UU isn't that kind. It's absolutely a threat, but Beedrill just doesn't have the stones to work as a reliable sweeper, it's much better as a hit-and-run attacker. Not quite as fast as some scarfers, and not quite as strong as some bandmons, but it certainly strikes a powerful balance between the two.
Also: Please don't ever run a boosting move and a pivoting move unless it's Baton Pass.
Also: Please don't ever run a boosting move and a pivoting move unless it's Baton Pass.