I certainly didn't know you could play him in the jungle or support pre-rework.....and being an ADC main that was once a top main and had to fight against pre-rework Yorick several times......I dread to think of how that lane would have played out.
But as of now, I can certainly see some appeal for pulling him those other roles. However...
In the jungle, if they do give him tools to survive it, he may become as oppressive as like season 4-5 Elise, where he can stay so healthy in the jungle, that any time he invades, he would be unmatched. It would also make his ganks super easy, and without much risk involved, which is essential to having a balanced jungler. So, I doubt we'll see him in the jungle due to how much of a potential problem he could be.
As for support.....I don't see why you can't play him support right now. If you're pretty good at landing his W and E, you could likely play him like a tanky Zyra. Not to mention, since he is melee, his Q should work quite well with Relic Shield. Also, due to how his ult works, you can send it down a lane to help out another laner, or just slow push a lane that doesn't have anyone in it, and go back to being a front line for your team. He has enough utility in his kit that, honestly, I could see him as a support right now. He'd likely be really weak to poke supports, like Brand or Zyra, but against the current hard engage, tanky supports we're constantly seeing right now, he'd pair up against them quite nicely.
Just my 2 cents.