It seems to me that one has to be really stable with sobriety and within themselves before attempting to bring another into the equation.
If a person has an occasional drink that shouldn't throw me off in my own sobriety. I wouldn't want to ask anyone to abstain from anything just because it is harmful to me.
If dating a sober person, I would want that person to be really healthy on their road. We are learning to take care of ourselves and that means not taking care of others and staying in our own lanes in terms of staying sober. Its a bit tricky.
Just my thoughts.