Aramors are well known throughout the Realm as they are one of the few entities who will aid anyone, without taking into consideration if their master is good, evil, sane or mad. Contrary to popular belief, there is no foreign spirit living inside the suit of armour, for the Aramor is alive and sentient through a permanent enchantment. At this time the defensive Aramor's plating is made entirely out of copper.
i'd have to check all the descriptions, for aramors -see bold text above- it even says that it is just held together through enchantment not by a spirit
so i dont think that co existance is it in that case, if you want to get a skill from using crits you would have to make it different for each different crit, some will have the same, some might have to be uniqe
my issue with this is just the generalization that wouldnt fit on all, if you come up with a better word that might change
edit:
i mean if you look at it this way you could call it "raising" or "guidance" or something like that, because the creatures grow under your guidance and evolve with your guidance, but since they dont "do" anything on their own i dont think that you could say co existance