I would not mind it honestly ...
As long as every NPC around Warlock with that pet summoned become instantly hostile.
Its weird enough that nobody cares about demon following our steps. :-/
But nobody caring about walking brain with claws and tentacles? O_o That would be ridiculous.
Well, Faerun is that kind of setting where Wizards and such are known to keep magical creatures as summons and familiars. Gale even mentions having a winged cat and burning down the house with a fire creature. That being said, there maybe should be more reactions to it, like a temporary Approval drop or people being cautious cause that person with a strange creature they have never seen before is obviously not normal. Illithids are rare enough that people likely would not know how to react upon seeing one and if it doesn't outright attack them then it might be a bad idea to be outright hostile as it is something they do not understand.
