We chill it after smoking it. It does lose some of cream cheese's consistency. Warming it up does not make it spread any better. We've been just eating it chilled and put onto crackers, or stuffed in jalapenos and cooked again, or on a sammich...or....
We made some smoked stuffed chicken breasts and used some smoked cream cheese as filling. Delicious.
Lots of recipes out there for smoking cream cheese. We prefer to dry rub only, and either use a little bit of olive oil or bbq sauce over the top, depending on what seasonings you use. Be sure to lightly score the block prior to seasoning it. 200-225 in the smoker for 2 hours on a piece of foil.