[Jete]

IMO, and it is very opinionated! A bard should only dual wield in 3 circumstances:

Fear kiting, tanking, or fighting at a lvl under 20.

After lvl 20 you should almost never have a weapon out. A bard is not very good dps at all, but really great at regen songs / dots.
(and of course crowd control)

Edit - I forgot to list weapons.

For tanking Kitch Der Pavz or w/e is great for the dot + dex, Staff of Writhing is good as well, or even a couple Yaks, but I would choose A Kitch Der Pavz over a Yak.
For fear kiting I would just use whatever you can get your hands on for the highest dps. Ideally, prior to planes, this would be again, yaks x2 or those quested Electrum-Bladed Wakizashix2.
For normal grouping Pre-20, I would go with something that does NOT proc anything, like 2 Ebon Maces or w/e they are called from Lguk.. or again the Electrum-Bladed Wakizashix2 from Mistmoore.