We can always find those odd ducks that are outside the camp. Even in this thread Robert Pate consigns all Calvinists to eternal damnation. So what is the point?
As BD noted above, you will have to look very hard, especially at TOL, to find the Reformed declaring all non-Reformed lost, hell-bound, and sin-bent. Yet, not a week passes that someone here and about declares the Calvinist or the Reformed on the road to Hell.
So let's be more honest with the topic and not tee up the oddballs here and about as representative of the majority in one camp or the other. Unfortunately those with minority views are often the most vocal. The casual observer of their rhetoric can mistake them as representing a broader group of believers. They do not and anyone with a modicum of discernment should know better and not simply pile on to the nonsense of others.
It is very serious to declare someone professing the faith as not possessing the faith without a great deal of direct discussion with he or she. And even after much discussion, such a declaration should be made only with the gravest forethought, prayer, and counsel with the community of saints.
At best we can only speak in broad generalities, such as "Mormons, Arians, and JWs are not Christians."
AMR