sup.

If he were to just disappear at a certain point in the main questline, would it have any consequences on progress?

Specifically- after you activate the securitrons at the fort for house,
it seems Victor disappears whenever house is spoken to again and your reward is collected.
He only disappears from inside the 38, I can still find him outside.

No

dandy

No consequences, however his securitron shell is still in Goodsprings. When I say securitron shell I mean his body is there, but you can't talk to him.

I was led to believe there were naked people somehow involved in this thread, I was mistaken. Nevermind, if you are already in the Lucky 38 and have access to all levels then, no he isn't important.

I think if Victor dies before you get to Vegas, you'll have to find your own way into the Lucky 38.