Sounds like a total waste of time.
It all depends on Al Quaeda doing as they're told and planting their bomb(s) in one of the City Centre Zones.
Except, if they bomb Hillhead, the Evacuation Plan's totally f****d.
What kind of emergencies have you had in your area in the past that might warrant this?
Glasgow's biggest threat fo devastation comes from mass suicide caused by SAD.
Or the US nuclear subs based in the Holy Loch. In which case, you can forget about your Grab Bag with your debit card and jammies ...