1H+Dagger is about as good as 1H+1H for combat, assuming dagger & 1H are equal item level. Depending on who's doing the theorycrafting, there are arguments either way for which is better, but they're pretty much a wash.
More, I think the look of a MH+Dagger is cool- it's something a big different from a Fury Warrior.
I've looked through the models and am tracking some down in game, I just thought I'd see if anyone else had run across some they like. I've noticed there aren't a lot of weapons that match well across item types, even within the same "themes".
The LK arena daggers would have been perfect, but they're no longer in game (for QD).
One nice one is the Saber+Dagger with the Mogu theme from SOO, and the Klaxxi have a nice 1H+Dagger set as well.
Can't go wrong with Japanese-style. You can get them in both sword and dagger styles; for instance Wicked Mithril Blade (blacksmithing) in main hand and a Permafrost Dagger (Outland green item) gives off a good matching pair look.
Then there's the Bloodlord's Protector and Twinblade of the Hakkari if you don't mind one of them going on the back (the dagger in this case).
Last edited by arcaneshot; 2014-04-13 at 01:03 AM.