Joe,
I myself would like to see a hard ground pulled at all times. I don't like using any metal conduit for the grounding conductor. Too many times due to sloppy workmanship or careless helpers, the threads/connectors do not get tighten properly. Most engineers are now requiring hard ground conductors pulled in the metal raceways using 277/480 volt wiring. I think that code change about the rated KO's being able to handle a 277 V fault helped that issue.
