ANy of the APUG veterans of John Sexton workshops: I was listening to an interview with him and he stated that he "does no push processing." I take that to mean he does no expansion development a la The Zone System. He said he just makes sure that he gets rich shadow detail and then works with either selenium intensification and/or paper grades.
Did I get that right? That would greatly simplify field work. Just mark your minus development and process everything else normal.