I bought a vita with this game on a whim a few years ago, even though I don't like anime and it is by far the best impulse buy I ever made. If you own a vita but don't have Persona 4 you are abusing the poor little lonely fellow and should be locked up for life.
PS3/PS4 are region free
And it's not like it'll be translated for EU countries. I'll just import it as soon as pre-orders are available and you should do the same