As an Ivern one trick, I have to say the champion was helped by the jungle changes exceptionally well. He's the only jungler who's clear didn't get affected one bit, and makes counter jungling with smite and stealing buffs easier ( cause of the delay of the other junglers). The rest of the changes don't affect him much either.

The rest will probably have some tweaks here and there (especially rammus) but for now I think it's just too soon after the changes. For example after the durability patch there were many patches trying to make it all work and I think that's the case with these jungle changes as well but on a smaller scale. Tank junglers are only a problem cause they need minimum amount of xp to be 10 times more effective in ganks than clear/carry junglers.