Yeah the only really negative thing is that basically every summon other than elemental totem erases existing summons. You can never have a personal army, and even if you can summon a condor, a cat, an incarnate, the bone widow, the bloated corpse, and more, you can only have one of those at a time. Which since the Incarnate at high summoning levels becomes absurdly powerful in practice renders all the rest of those obsolete, which is a real shame. Not sure why they designed it like that. You can get elemental totems aplenty (woohoo) but 1 summon and some totems is certainly not my favorite summoner ever from any game, let's put it that way. Not saying they're not competitive, I'd just love "moar summons" personally. I know, I know, balance and all that jazz, doesn't mean I have to be happy about it.