Has anyone tried this? It seems to me he would make a great full tank support. He has a slow, knock-up, and his ult which are all great for securing kills for your carry. Not to mention if you max his E first that's a massive armor / AS steroid for your ADC. And come late game, even as a full tank, J4 has a lot of killing potential and can still dive / kill the ADC
"The only people who should shoot, are those who are prepared to be shot at."- The Great Emperor Lelouch Vi Britannia
It's a kill lane. Basically you gamble getting a lot of kills in lane for being relatively useless late game otherwise. An extreme version of Leona, if you will.
Earlier today I watched a korean tournament where they went support Jarvan and lost. But then Renekton on the other team went 7/1/something, so the conclusion was inevitable; even though Jarvan support was able to help Ezreal win lane, he was useless later since his peel was nonexistent.