SCH pet glamors?

[Zojha]

Scholars can't have carbuncles as glamour for Eos/Selene because the fairy is a living being, carbuncle is not.

Technically, a fairy is just an aetherial construct plugged into a soul stone. It is capable of independent action, but carbuncles have proven to be the same (See Tataru, see Mor Dhona girl, probably more).
Unlike our anima (or even Zeta), fairies don't purposely get instilled with will, personality or even sentience, so whatever will they have is likely residue from previous users. This is very much like Egis, which also share "personality" traits from the original primal whose signature is used in the summoning process.

That said: The real argument here obviously is that the anima should not be able to be discarded, glamoured or unequipped. Because that's just rude towards it.

[Jandor]

Technically, a fairy is just an aetherial construct plugged into a soul stone. It is capable of independent action, but carbuncles have proven to be the same (See Tataru, see Mor Dhona girl, probably more).
Unlike our anima (or even Zeta), fairies don't purposely get instilled with will, personality or even sentience, so whatever will they have is likely residue from previous users. This is very much like Egis, which also share "personality" traits from the original primal whose signature is used in the summoning process.

The fairy exists in some capacity regardless of the player character. The quest journal makes it pretty clear, the fairy slept for 1500 years within the stone, she seems to be the exact same entity as she was over millennia ago and even remembers her previous owner. In comparison the Summoner stone provides no such inate summoning capability, you have to go and summon tiny primals and enslave them to your will.
Considering it displays much more independent thought and action than any other summon forcing it to inhabit the body of a carbuncle, if it's even possible, seems almost cruel. The game stubbornly refuses to give us the option to be bad guys .

Edit: Journal quotes.

However, Alka Zolka had not anticipated the appearance of an otherworldly creature, one which seemingly burst forth from a crystal you found with the tablets.

He notes that the Soul of the Scholar should have imparted to you a far more diverse repertoire of spells, and concludes that the cause may be your faerie's fifteen-hundred-year slumber.

Based on the reactions of your faerie, Alka Zolka concludes that each is a distinct individual with her own thoughts, feelings, and memories-- an exciting discovery, to be sure,

As Alka Zolk prepared to deliver the final blow, your faerie inexplicably came to the tonberry's defense, providing it with ample time to escape.

Alka Zolka is thrilled by the resemblance you bear to the Nymian scholars of eld. He is not alone in his excitement, as your faerie also appears to approve of your new raiments.

Like his fellow Nymians, Surito was driven mad by his fate— until you returned with his dear companion Lily and cleansed him of his rancor.

[Rawrz]

The fairy exists in some capacity regardless of the player character. The quest journal makes it pretty clear, the fairy slept for 1500 years within the stone, she seems to be the exact same entity as she was over millennia ago and even remembers her previous owner. In comparison the Summoner stone provides no such inate summoning capability, you have to go and summon tiny primals and enslave them to your will.
Considering it displays much more independent thought and action than any other summon forcing it to inhabit the body of a carbuncle, if it's even possible, seems almost cruel. The game stubbornly refuses to give us the option to be bad guys .

Edit: Journal quotes.

You haven't actually proven anything against her claim, if anything you strengthened it. Lilly hibernated within the box with her soul stone. The moment Lilly dies (unsummoned) you construct out of aether, another vessel for her. Kinda like you uploading all your memories and personality to a cloud memory bank. You die in a knife fight because your cousin Rickey forgot to sharpen the blades. That damn Rickey. But it's alright, because the boys back at the lab have made you a new body and uploaded your last memories into it from that cloud storage. You died, but you're alive know, completely knowledgeable on events up to the point where you died! Are you immortal? Kinda. You'll keep learning that's for sure.