I was wondering what everybody liked to duel wield? My personal favorite is the smg/ magnum or the smg/ plasma rifle. Also, the plasma rifle/magnum is also pretty powerful.
For the three i use in team duels and other forms of slayer games, the most effective is the smg/ plasma (the covenant weapon deplets the shield while the smg kills). I really havent tried the plasma rifle/ smg, but i believe that it might be even better then the othe combo.