[He looks a bit caught off guard, like the concept of not summoning a vestige has never occurred to him]
Well... I can't think of any compelling reason not to. He was quite a common choice during the time of Syfal, a binder heyday of sorts, but my family's archive didn't include much about his ritual. It would be... Potentially decades of research just to compete his seal, assuming some information of it exists here...

But there's really no cause for alarm, one of the reasons binders abandoned Chupoclops after a while was also well-recorded as a precaution to others; he's just so horribly depressing. His influence makes you terribly pessimistic, and just horribly gloomy all the time... He was supposedly useful for escaping witch hunts and the like.

But, like I said, it is aware that it's time has passed. It's no more evil as a vestige than... say... Iron? It simply exists. Some use it constructively for the good of all, some use it to kill. Vestiges are much the same. Even this eater of worlds is said to have been used to do some good, it depends on the user.

At any rate, I'd have to try, so i could document it. My research will be critical for the future generations. [He says, tapping his journal]