
There will always be lore-nazis. I wouldn't sweat it. Do what you want with your character!
 You're right that you can't please everyone. People will always disagree, so I'd say the balance is making your character lore-friendly enough that there are enough people who do agree to give you a pool of potential RP partners large enough for your tastes. Also, there's nothing wrong with playing a Doman! There are quite a few I've run into, and there's even an FC for Doman characters. If you got in touch with them, I'm sure they could help explain more of the Doman lore.
