In medieval times as far as I remember demons were seen as enemies (earthbound mostly). In modern nights does that still hold true? Are they seen as enemies to be hunted on sight still or not?
And what about elder vampires, does the stance typically change for them?
In modern nights, a recently embraced vampire is likely to consider the existence of Demons pretty much the same way you would; incredulity, some fear, and some curiosity. If the vampire was religious, there might be a pretty violent reaction.
Most vampires learn about the existence of vampires through the Embrace, most vampires never learn about Demons.
Elder vampires, on the other hand, are likely to react more negatively; the further back in time you go, the more likely the vampire is to have had some sort of contact with or at least heard about the Baali, who can be considered a blend of vampire and demon, (possibly?) born from a rather disturbing collaboration between the Antedeluvian Saulot and the Earthbound Demon Baal.
The Baali are asshole vampires that worship demons and the whole reason behind the love of Assamites for kindred-blood - they cursed the Assamites after the sons of Haqim beat them almost out of existence for being demon worshippers twice. They have demonology rites... and besides the Tremere, Assamites, and Salubrii are the only ones that have a clue that demons actually exist. They are hated and despised by all other vampires, being one is more of an automatic death sentence than having a third eye!
They are the other kids of Saulot. They and the Assamites beat the Baali nearly out of existence. And they are the exact opposite of Baali: they hate Demons. And since they are just about a handful that holds the entire memory of their clan... believe me, the half dozen of them have some 6 millennia of hatred for them.
The Children of Haqim have written it on their flag that they will exterminate Demons. They hate Baali and Demons with more passion than they hate Tremere. That is, those that do know about them. Many youngsters don't know, but the elders... oh boy, they know and hate them.
They are children of Saulot and Mages... they know and they have strict rules that grant you a sunbath if you so much as try to dabble in demonology. Call it the heritage of their leader actually being Saulot, or them being formerly a member of the Order of Hermes that had handed Demon-research even before they were vampires...
If they know that Demons exist, they hate them. Because those that do know they exist, know that they are the reason behind the Baali Wars and the fall of the first cities... which might actually be a rather short list: the clans up above, Backet, and possibly some dozen handful individuals globally know specifics.
However, hatred of demons in general is heavily enforced: In every clan but the Baali and the Setites - and that includes the Sabbat - dabbling in Infernalism is a death sentence, even if the people have no clue what an earthbound or proper Demon is.
The Demon hunters of the Kindred are the Sabbat Inquisition and Camarilla Josians, both actively hunting down Baali and Infernalists, in addition to the Assamites & remaining Salubrii.
