Well, taking into account what NT Vergil did to Kat: he used her for her powers, played with her emotions, put her in situations where he knew she could die to further his agenda, I don't think classic Vergil's treatment of Kat would be much different.
Classic Vergil was happy to side with Arkham for as long as he was useful, but then turned on him when Arkham showed weakness over not killing Lady.That to me is similar to how NT Vergil treated Kat. He accpeted her for as long as her powers were useful. But as soon as she became a danger to his plans, he refused to rescue her from Mundus and risked her life by taking the shot at Lilith during the exchange. I could see classic Vergil doing the same.
So really I would say Vergil would treat Kat with the same contempt he has for Arkham and Lady and only keep her with him for as long as her powers were useful to his goals.
Kat is a good while Arkham is evil. So that's not a good comparison.
A better question to ask "Would Vergil risk life of a friend who has supported him, in order to get his hands on Dante's amulet?"
Risking a life of someone who's been there for you for power. "Might controlls everything. And without strength you cannot
protect anything, let alone yourself".
I haven't seen Vergil kill or risk life of someone close to him. Dante stabbing is an exception as he and Dante have high speed regeneration.
So how can we call that risking Dante's life if Vergil knew Dante would get backup shortly after getting stabbed?
Suppose a girl had helped Vergil when he was say 16, then this same girl appeared and some villain wanted both amulets or she would be killed.
Would Vergil let the girl die...?
I'm not so sure he would.
You don't have to be desperate to take a cheapshot, you just...do it. Premeditation for doing so also isn't necessary, not that taking a cheapshot requires such a huge degree of calculation anyway, you just do it. You see an opening, and you take it. It is, and always will be a cheapshot, because of exactly what you're doing.
Like I said before, the outcome doesn't matter, just the fact that a cheapshot was taken. Hell, even DmC Vergil took a cheapshot at Lilith.
I fail to see how that is a cheapshot. Taking Vergil's standpoint,
a gang is troubling me and i dont got time,
i kill them quickly without warning.
I know if i wait and give them a warning, same outcome would happen.
So i dont see that as a cheapshot as the gang never had any chance to kill me to begin with.
I don't think continuing on this will lead to anything, so i will just agree to disagree.
As i said, i really dont see attacking someone just to get them out of my way sooner than before as a cheap act.