Is Naut viable in the meta

Perfectly viable as a "Get the carry fed" type support. Similar to Leona role wise.

Support wise he is, play him simliar to leona.

You can also take him top to stop garen and darius since you can pretty much outsustain their damage, you won't be able to kill them but nethier will they

He's also not bad in the jungle. Your ganks are extremely fun.

He has high base damage so it's easy to just w-q-e-aa and walk away for free if you're in the support lane. He's really fun to play, kinda like support. Taking him into the jangle is also fun, you have high sustain and easy ganks, very good dueling power. Naut is a very good champion, even after the ratios nerf :p