I'm pretty sure the rules here frown upon what is an obvious toss since, like, when Fancy Vivillon came out. It's even in the first post of the thread IIRC.I asked because I honestly didn't know. I'm sorry for asking then. I personally thought the IVs were quite neat, just not perfect.
Moving on, if you're wanting to evolve Hippopotas, then Luxury Ball would be the best way to go.