Dan,
Exactly how often do you refer to the wet compass? Yes, it's stowed on the Globals and rad by mirror in Douglas -9s. I check it after IRS alignment and stow it as per the AFM. If several million dollars of Collins finest avionics were to simitaneously fail, I'd reach up and unstow it. The chance of this happening are vanishingly small. What next, gyro-out PAR practice?
GF