These days still I claim to be "from the protestant mainline," but I feel anything but mainstreamed. A while ago in a discussion someone asked what's not mainline? and I replied "spurline." In terms of church and churches, sideline might work better, but spurlines terminate abruptly without going further, exactly what my life has been doing: not going any further. However, since our way of reading and interpreting scripture distinguishes the mainline churches from other churches, in those terms I'm still mainline.