Should Arceus be allowed in PvP or Gym battles upon Pokemon GO debut?

Arceus, one of the most powerful Pocket Monsters known so far, is still missing from Pokemon GO.

Pokémon Legends: Arceus Review (Switch)

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Evolving Upon the Classics in Style — 'Pokémon Legends: Arceus' Review

Does this mean possible PVP for Legends Arceus? (Since the Asia battle festival had PVP competitions based on battles EG: TCG, Unite and GO). : r/PokemonLegendsArceus

Any use for him in pvp or gym battles or should i just use him for flexing my ego in gyms? : r/pokemongo