is coolness a calling?

Here is a quip from a review of Blue Like Jazz, a book that we are all going to have to read sooner than later. He talks about the tone of the author, which to be honest has kept me from reading the book thus far. It deals with the issue of coolness--is it a good or bad thing to be [at least try to be], cool and Christian: "Another appeal is that they’re [insert whoever] cool, which can be good and bad. The good part is that they understand well how people see Christianity from the outside. The bad part is that coolness can devolve into self-righteous, soul-patched, God-is-not-a-Republican elitism." well put, i think.