Whoa! He got to CHOOSE since he was a hatstall? What did he pick?
Anyway, I do think that's rather rare. Usually you get to choose between two, Harry was SLytherin and Gryffindor, Hermione was Ravenclaw and Gryffindor, and Neville was Hufflepuff and Gryffindor. That's cool, He's a Harr-ivlle Granger???