I keep hearing it starts out a little rough but balances out into not being too bad. General rule of recent SMT games seems to be after you gather a few demons of various types, you tend to be able to plow through the game.
I haven't "plowed" through any SMT game, even the easiest ones like Persona 4 and Soul Hackers. There are always parts where you'll get stuck and you'll get your ass handed to you if you aren't prepared.