Not to mention being robust against all kinds of physical abuse, which may itself be a useful characteristic for an on-call comms unit.
Policy I've seen employed was that the current on-call remained on-call until the pager was fully charged.
Dead pagers may be more fun than dead puppies, but that's not a high-prestige contest.
Not to mention being robust against all kinds of physical abuse, which may itself be a useful characteristic for an on-call comms unit.