Skip Jungle Items on Ivern
Post Edit TLDR: Hunter's Talisman provides bonus mana regen and bonus special exp from clearing camps, but the completed jungle items don't provide as much utility as other "normal" items. Because of this I feel that skipping the jungle item completely may be a viable option.
Also Hunter's Potion QoL could be improved by activating a charge after freeing a camp when full.
You honestly don't need a jungle item with Ivern because you are not damaging or killing jungle monsters.
I believe you are actually better off starting with boots or just rushing some other form of sustain item.
Alternatively you can start with a more aggressive item to help with your ganks, but jungle items simply aren't necessary.
Also, I'm going to need to test it again, but I don't believe Hunter's Potion works either. When "freeing" a camp, I don't believe I remember seeing it add a charge or activating a charge when full. If someone else has tested this also, feel free to confirm or correct me.
Edit:
I went back and tested it.
You do not gain level 2 from "freeing" the first camp without having 
. You gain about 50%
However, I will double check to see if you do get level 2 with it. I'm not certain that you do. I would be surprised if Hunter's Talisman gives you a bonus 50%, if anything. The passive description says "killing" monsters grand special bonus experience. You are not killing the camps, so I don't think it should.
Even if it does, fine. You are still getting a component item toward a jungle item, which ultimately will be inferior to other items. I still say skip it and get something that will help you in the long run.
As far as being "under leveled" ... I don't really see it. You have great clear speeds and a strong understanding of his kit will lead to greater lane pressure more frequently, meaning more exp from ganks.
Now, for the Hunter's Potion, I was correct about it not activating a charge, but I was wrong about not gaining a charge.
So what that means is in order to get the most use of Hunter's Potion, if you are about to "free" a camp and you have 5 charges, you should activate a charge first so you get it right back.
Honestly though, I think Riot should just have it activate a charge automatically. In fact, I'm going to make a new post about that now.
Edit #2
Hunter's Talisman does give additional exp, however as I said before, the final jungler item does not feel as impactful as other items would.
The fact that he hits level 2 after the first camp didn't really make much difference because in both games I hit level 3 at about 3:00 into the game.
I honestly feel like the experience difference will come from your ability to make effective clear patterns and pressure lanes than having Hunter's Talisman does.
