Exactly! If you buy Bitcoins, you will earn from it's price growth. But if you buy ARK, you will earn from both currencies price growth

Yes that's right, it's great for hedging,
Because there is still plenty of room to grow along with the progress of existing development
Other than that it seems also still available empty spot market in polo after they remove 17 altcoin from there, and maybe one day they are willing to take ARK
So there are still many potential things that can be achieved later on