Evolved summoned monster question

[Raveve]

I want to make an Arcanist Occultist with the feat Evolved Summoned Monster. My GM prefers if we use unchained summoner, which I am fine with. However, the unchained eidolon has new subtype restrictions on a lot of its evolutions which many common summons do not meet. Should the subtype requirements apply for this feat?

Additionally, my GM has ruled that creatures with the appropriate limbs meet the prerequisite for Claw/Slam evolutions but how would you rule on creatues without obvious features like an elemental?

[Diego Rossi]

Regarding your question, the limitations of the Eidolon in no way limit the Summoned creature. They are two completely different things.

Elementals can have any shape, they aren't formless.

For example, the Air Elemental description says:
"Although all air elementals of a similar size have identical statistics, the exact appearance of an air elemental can vary wildly between individuals. One might be an animated vortex of wind and smoke, while another might be a smoky bird-like creature with glowing eyes and wind for wings."

The problem is that your GMruling will allow the Summoned elemental to add 2 extra attacks at the cost of an evolution point, while they normally cost 3 evolution points (extra limbs+claw/slam).
If the evolution simply changes the elemental slams attacks into claw attacks there will be no problem.

Summoned creatures generally aren't particularly strong, but the Summoner has the advantage that they last for a longer time, increasing their utility.