Do you think he's viable right now? Top or Jungle? For me non-meta always wins and I want to try him. If anybody plays and has thoughts on runes, masteries, and items speak up. I'm getting mixed signals from all of my main build sites. 
Fervor. Any hydra item+cleaver then full tank.
I've tried playing him a few times. Either I'm terrible at him or he needs a buff.
he's getting buffs next patch
Personally I feel like Renekton right now is "ok" Pros He is very aggressive in lane and can bully the other lanes. No mana pool so can stay in lane if you have sustain for hp for items. Can 1v1 just about anyone.
Cons
Falls off HARD in my mind he isn't as tanky as other tops as the game goes on, and unless you have 
for dmg by 25-30mins becomes useless.
The reason is when the game goes to the 25-30 mins the Hydra is good for split pushing but when the enemy team is grouped and doesn't care as the enemy Tank they can just win a 4v5. Unless you can take down 2-3 towers at top while split pushing its a lost cause.
Most players know that falls off Hard unless he has 3-4 items, so at top the enemy will just play safe and you will have to choose between diving them or just wait as the game goes on longer and longer = you becoming more and more uselss.
Jungle is a mix bag for me as Jungling Renekton will delay your build as stated before even with core items he falls off so imagine jungle Renketon with less of those items. If you miss your W and Gap closer E the gank will be an epic Fail.
He is ok at objectives like Dragons and Barons and can be a terror if encountered in the river.
But Overall I would give a Renekton a 6.5 out of 10 (MY OPINION) as of right now.
Nice post and Have a Good One!
He's good. Take fervor on him and you can literally cheese any top laner if you take ignite and longsword level 1. This guy has a good guide on renekton http://www.lolking.net/guides/361308 (He is known for being able to 1 shot people on Renekton) I prefer full AD Renekton because it's just a bitch to deal with when he's fed. The only real counter is just hard cc chain and kiting, but since you have a gap closer I doubt kiting will do much.
he's a great skirmisher, meaning he dominates early game late game however, he's just a stun tank who can dive and kill the adc pretty fast other than that :/
After the W change, he feels kind of shit to play. Granted you can still dominate with him and crush your opponents as he is a hard lane bully and an effective split pusher.
