Regarding BiS / What's good @ BiS level.

I just saw a fury war with Fleshrending Gauntlets and Shadowvault's cloak + Toskks, is there something i don't know about fury warriors atm?

There are atleast 2 or maybe 3 other threads that talk about BiS wrist and cloak.
Tosk + Shadowvault vs Veresas + Umbrage
Both are more or less equal, where Umbrage and Veresas are better duo to higher item level by 1-2 stats overall.

Fleshrending Gauntlets are not BiS. Nothing beats Aldrianas.

Yeah the Tosk + Shadow / Umbrage + Veresas aint the prob, the big question is why he raided with Fleshrending o.O