Personally I use dual bows on my nightblade (one on each weapon bar) and set up one bar for single target and one bar for AoE.
I find it more intuitive to have one weapon with more options than to use two different weapon types that function differently, especially in the chaos of combat.
Would i not lose alot of potential by only having bows on both? I mean, ive feelt its very limited what i can get from the bow three.
What would you suggest then for each of the bars?