Bard One-on-One solo?

[Lhancelot]

The problem with leveling via swarmkiting as a bard is you miss learning how to group properly and use your songs depending on the situation.

Sure, you kill 25 mobs at once, and level extremely fast, but you also skip out on learning your class.

Unless you are an experienced bard player, and don't need to become familiar with your vast array of songs, you shouldn't focus only on swarmkiting for XP.