Yes, I think so judging from the number of men on this site that state "NO" to the question about whether or not they agree with the Church's teaching on premarital sex. I always try not to speak too long or in too much detail about religion or politics until I really get to know the person. Keep the conversaton light for awhile. Take your lead from him.
I totally disagree with your advice. Not that you should pick a fight on a first date but if you don't agree with a man on the basics of religion and politics, why waste your time? We are not talking about a work situation but potential spouse. I was going to type that I am way too old to be wasting time with morons but I didn't put up that garbage when I was 20 so apparently I haven't changed :)