Ah. Not sure if I explained it well, but OOC the gamish elements of PMD are more confined to dungeons, while lesser effects still work out of them. Since Pokémon is still a game based series at heart, it doesn't show, but that's why I had to start adding lore and world building for stuff.
The Violent seed only maxes your atk stats in canon. No berserking added. I put in the effects because the seed's called a Violent one, and there has to be a reason for that, right?
In any case, your idea would work outside the dungeon, but not inside it.
... Huh. You just gave me an idea.