When to pick Kench JG?

I'm liking Kench jungle in normals because his ultimate and dueling ability are a lot of fun mid game. However, he's really weak early and his clears are too. He also doesn't have the best objective control because he lacks % HP damage like WW or Mundo (among others). I love tanky duelists and I really want to have a reason to play him in ranked. If it were ranked, I typically play WW, Mundo, Eve, Rammus and Jax. I used to play a lot of Nocturne, Nunu and Fiddlesticks when they were better too. Kench has more CC and peel than most of them but is that enough to ever make him a better pick overall? I kind of doubt it and after all, Mao and Sej jg exist too. Even vs divers like Nocturne, I can just play Rammus and E him a second after his spell shield runs out.

I don't want to troll my team with the pick so when would it ever make actual game sense to go Kench JG? He's the most fun I've had jungle in a while. His whole kit's just hilarious and never feels useless if you play it right. I'm really torn because Kench is so much fun but I don't play support or top except as fill. I also don't enjoy those roles as much as JG. Anyone else have a champion that they'd just love to play but is unfortunately not for the role they want? feelsbadman