I just re-read Promise of Witch King.  I had my characters mixed up regarding the wagon scene.  Entreri let go of Calihye's good friend, who was a woman.  As far as his alignment goes, I'd say he's still evil.  Although he seems to be willing explore his emotions now (influenced by his partner, Jarlaxle and the magic flute), and may find "purpose" in his life beyond killing, he still exhibits the darker characteristics that have defined him throughout Salvatore's books.  The D&D; 3.5 edition description of LE still seems to describe him best  for now. 

 Changed alignment to Lawful Evil 

For reasons explained above.