Not sure if this is OU worthy, and i don't have any logs because i can't play this meta yet, but i haven't seen this set around yet:
Weavile @ Poison Barb
252 HP 252 Spd 4 Atk/ 252 Atk 252 Spd 4 Hp/ something in between
Jolly
Pickpocket
Fling
Knock Off
Icicle Crash(/ Ice Shard)
Swords Dance
Behold, the one mon that can royally fuck up anyones item strategy. With the new and buffed knock off, which sits at almost 100 bp when the opponent is holding an item, combined with STAb, makes weavile hit very, very hard. As if that wasn't enough, pickpocket acy=tually works before knock-off according to smogon, so weavile also steals whatever it is its victim is holding. If whatever it stole isn't useful, it can be flung away, and if it is useful you can procedd by setting up with SD and attempt a sweep. The poison barb lets you fling off a 70 bp dark move witha 100% poison chance. A Dark Gem is another option, boosting the first knock-off to rediculos amounts of power. Icicle crash is there for additional STAB/coverage,
since Weavile is already very fast which kind of renders ice shard moot (it's still an option however). The EV's aren't really set in stone, it really depends on what tier this ends up in, what he needs to outspeed and what KO's need to be secured/avoided, but a spread between attack, speed, and some HP seems logical. Constructive criticism is welcome.
EDIT: As Judicator pointed out to me, Pickpocket works the other way around, and takes the opponents item when it hits weavile, making it largely useless. I do believe however i can still make a useful set out of this.
Weavile @ Life Orb
252 Atk/ 252 Spd/ 4 Hp
Jolly
Knock Off
Icicle Crash
Swords Dance
Ice Shard/ Low Kick/ Poison Jab
Almost the same as above, only without actually stealing the items.
Anyways, the combination os Weavile getting icicle crash and the buff on Knock Off, not to mention the offensive buff dark got by no longer being walled by steel types makes this much stronger. The last move is a toss up between STAB Priority, a way to hit a lot of walls harder, and a move to get around the fairies that would otherwise threaten Weavile (except for Carbink and Mawile).