This could change very little in the grand scheme of things.
I certainly don't see it changing Doc's opinion on violence, though even a tender, gentle turning done out of fear for his well-being would make his already volcanic temper harder to control. Vampirism won't change the town's opinion of Doc. They already think he's a vampire by the end of episode 5, though the absence of his turning certainly might raise questions about his loyalty.
But. I have just thought of an analogy that would be fun to use. Because I love it when Owen Learns what Legs did.
It is like the doctor is an egg.
His is a soul perfectly shaped: smooth and round. Louis too was no ordinary stone. The cut of him glimmered beautifully and lit his surroundings whenever he smiled. For a time Owen had thought the doctor similar: a stone of unusual perfection among the cobbled masses, if of a make far more humble than Louis.
Because hidden beneath that kind and merciful shell--
In his mortal years, Owen did not often partake in good food. It was beyond his means; all his coin could buy was stale bread and last year's flour. His time in the forest let him supplement with greens and berries, let him set snares for rabbits and the like. But he had been too poor for fine things. Even eggs.
But he spent his days in the forest, and come spring the ducks would make nests in the reeds by secluded ponds that few but Owen knew about, and in those--
The yolks were huge, and gold, and they tasted like gold might. They were rich on his tongue when he pulled them from the pot, coating his tongue with flavor that felt like hearths and the summer days ahead and sinking deep into his stomach to leave him full.
He had so rarely been full, even as a mortal. There is a reason he finds the hunger so easy to bring to bear, for all that it bites at him.
Because beneath the perfect sculpture of his soul, beneath the stubbornness and care that other doctors had never shown, Owen finds a rich and wonderful surprise. He bares his teeth and forces them through the shell and beneath it, oh beneath it.
He had known that humans deserved death. He had known that the only true, the only just course of history was for Owen to fall upon them until they fell as wheat before the scythe. He had known that it was what Louis would want, and here, oh here was a gift as rich and fat as any duck's egg:
Proof that a man like Louis would agree. Would do the same. Legundo is like Owen because he is a judgement like Owen. He is an echo of Louis' perfection without, and a twin to Owen's truth within.
And now, all Owen needs to do is show him that the truth of him is nothing to be ashamed of or hidden or chained. That this is what they are meant to be: a cleansing fire to the disease of humanity.
Of course the other vampires are not Owen's to have. His real kin is this man. This is who Louis would have him find companionship in. Perhaps he is Louis' final gift to Owen: a human for Owen to make anew, make well, as Louis did to him. Already he can taste the golden days ahead: the richness of blood on his tongue as they wipe the world clean in one another's company.
And now all there is left to do is wait for Legundo to wake.