Most of my initial hookups with someone are oral sessions where I receive. Men who believe the job is not done until I at least blow in their mouth and have been milked dry get top priority. I don't necessarily care if they actually swallow my load, but it's sexier to me when they do.
If my initial hookup is mutual oral or me giving oral only, I do swallow. I agree with
@chrisrobin. If I blow you, I will swallow. To me, sucking a man off means draining his balls and take his seed down my throat. I prefer having fun with men who have the same approach.