John brings up a good point.
I did a hospital a while back and the only receptacles that they stocked were the hospital grade even though they did a lot of work in the offices.
They told me that this actually reduced their costs because none of their electricians even had to make a return trip to the stockroom after realizing that they had picked up the wrong device.
Of course they were also concerned that a commercial grade receptacle might otherwise find its way into a patient room...but that's a whole different concern.
