Again, other than handing out literature (and perhaps talking to anyone who intiated a conversation) the only in my time at a public university the only
unsolicited proselytization I saw was from a zealot who called himself "Brother Moses" and some group of creepy kids who sounded like they were affiliated with Fred Phelps' church.
I guess it comes down to whether you're preaching peace or whether you're preaching hate. If you're preaching peace, I'll like you. If you're preaching hate, I'll despise you. Simple as that.
I used to love religious debate, but it seems fairly tedious lately.