No Summoners does kind of suck :< But then again, that does set it apart from Final Fantasy, which gives you a Summoner like every game (except 1 and 2 iirc).
I know X and XII have Summoners 'cause Yuna and...why do I want to call her Asch I think her name is similar or something. Idk about XIII though. Betcha anything VIII has at least one summoner too. And VII doesn't have a Summoner class either but uses Materia instead, right? (Haven't played it in ages and deleted it from PSP; IX is a billion times better than it.)
OK, paper done, bed time.