Is there a nice build for berserker/troubador ?

[Darab Masood]

I did not find it in the list. The blood thirst seems to ignore recovery for several strikes after killing your summoned vessels. It could be a really decent dps build.

[Boeroer]

Yes (not in the build list though).

You pick Berserker/Troubadour (or Beckoner) with maxed INT (to counter confusion's -5 INT and still hgave decen friendly-fire Carnage AoE size). You use Amra with Riven Gore (procs on crit, same size as Carnage). This raises the chance to "accidentially" kill your skeletons significantly. Blood Storm (Frenzy will last forever basically), Bloodlust, Blood Thirst, Bloody Slaughter. Ancient Brittle Bones first and then Many Lives Pass By for skeletons. Use a pet that heals on kill to completely counter Frenzy's self damage. Battle Axe modal always on because the recovery malus doesn't matter with Blood Thirst. That's basically it. Alternatively you can also use a reach weapon to better place the Carnage on certain enemies in order to hit more skeletons. 

You can do this without Berserker's confusion: use Whahai Poraga. It has friendly fire without confusion. You can combine Corpse Eater with Beckober or Skald for example: secondary summons like Ancient Brittle Bones' second wave skeletons, second wave drakes and also Many Lives Pass By will leave corpses when they die. You can use White Worms on the skeletons corpses and eat drake the drake corpses.

The Berserker variat is significantly more brutal though.

If you have a Chanter in the party already then it's better to use a Brute though: Blood Thirst in combination with Cleaving Stance is even more brutal when you accidantially kill your Chanter's skeletons: each kill will proc Blood Thirst but also a Cleave which usually kills the next skeleton and so on.

In any case you do NOT want to have low health party members near such a guy who is wielding Amra in confusion. Riven Gore will destroy them instantly when they are below 50 health, removing them from the party without further ado.