I did experiment with this a little bit some days ago.
I played a (mostly) temporary summoner with alot of wraith’s(summon as many as possible at the same time), skeletons(self ress node + summon multiple per summon) and the summon putrid wraith nodes from both necromancer and lich tree.
Basically all my minions were “expandable” and i did alot of spell/casting damage by myself, basically i was half-caster, half-summoner.
I also did use chain-sacrifice as strong burst which basically cleared the WHOLE screen and destroyed all my minions.
It is definitely another kind of “summoner” playstyle, very interactive and you Always have to think do i need sustained dmg now(marrow shard) or do i need burst(sacrifice)