I have found this book interesting but I cannot see any groups that are living as exiles. I still see the Church allied with society at large. It is not the subversive organisation that Jesus established. I find myself outside of the church at present and my current beliefs are at odds with mainstream evangelicalism.
I am a self imposed exile but I still want to follow Jesus in his mission. I think Michael Frost's book is one of the tools that can be used to sustain those who do find the church 'dull, boring and irrelevant.