Summoner vs. warrior is stupid anyway given the way the game is designed. There's no mana, which means there can't be any player mages; the closest you can get is an evoker/priest and everybody gets the same power out of it no matter how much you use that wand of striking or pray to Legifer. There's only two ways to 'summon' monsters: you can pray to gods and if they like you enough maybe they'll send an angel down but there are no godly guarantees (except maybe Silva, and she's the only one whose main gifts are animals, and you only get that once every three hours), and there are scrolls of golem creation which IME are practically nonexistent. The only reason to even bother training your mind at all generally speaking are the scrolls of harden material and scrolls of change material; if it were possible to buy equivalent services I certainly wouldn't bother trying to train it.
I mean, I can understand thinking like this if you came from, say, Triangle Wizard, but that game is designed to be played multiple ways through and through, what with everybody having at least a little mana and the library of spells being huge and all. This game? You have no spells, you have no mana, you only have what the dungeon gives you and you have to work to get your stats to raise even if it's easily trained for your character. This game railroads characters into striving to be the exact same one 'cause otherwise you're dead, which means that if you could choose your stats at the beginning that there'd be just as little variation (generally speaking).
In short, I'm pretty sure the full-blown thing would be stupid and widely not used as imagined. An option to set straight 10s and average growth in every stat would be fair, though.