I agree, it is! I did a light comparison[0] between a logic programming solution to sudoku (Prolog) and one using constraint programming (Scala + JaCoP). I thought Prolog was a little nicer because it was shorter and more declarative, but the JaCoP solution was still great compared to any non CP-solution.
[0] - http://nickknowlson.com/blog/2012/08/06/seven-languages-week...