yea, attractive as in "friends", NOT "bed room" :D
I have done both and was WAY more successful being slightly rude and mean.
Truly nice girls won't go for this; they (we) really do want nice guys. Trust me on this.
The kind of girl who would push you away for treating her with respect isn't the type of girl you'd want, anyway (at least, I hope not! ;-))
Think of it as an "early warning signal" to tell you which ones to avoid ;-)