Many people do that. You can be Jewish (by origin) but also Catholic (by faith). Nobody is going to throw you out, for not being religious enough! Not many people go to church nowadays, they are happy for every paying visitor.
I am an agnostic though, I do not care.
> and it's not 'vegan
Not everyone is going to live up to, your strict "1869" version of veganism. I am 85% vegan, and I like rounding up.
> Vegan doesn't mean 'can't own pets
Person can select an animal by laundry list of criteria (sex, breed, color, size, temperament, age...). Put into cage regularly whenever convenient. Keep it alone in tiny apartment for 12 hours. Even castrate it to make their life easier... And somehow it is equatiable relationship, with no exploitation!