usefulness of the high-end Construction summons?

[Omnirizon]

poison golem is one of the units I would consider bone armor on.

I never use them though, because one of the few nations that can easily summon them is LA Argatha, and their Tomb Oracles are much better. And... Well... just the fact knowing someone has a level 5 spell that is better than the level 9 one makes me just ever unable to use that level 9 spell... no matter which nation I'm playing as. Kind of a heuristic, yah know? If there is a level 5 spell better than this level 9 spell, maybe that level 9 spell just sucks.