Since DiskWarrior now comes on a USB stick, partitioned into a recovery drive & a recovery drive maker, I thought I'd see if there was an update to the latter with full 10.12 compatibility. There is such a thing, I have used it to update the recovery maker partition on my DW stick. I'm now in the process of making a DW recovery drive to suit 10.12. This works in the same way as a regular recovery drive except when booted from it, the first set of utilities is DiskWarrior.