In a holster, in the open - on one's person - is much preferable than in an anomymous bag or briefcase.
The schoolteacher who lost her job for bringing a gun to school, had it in an obviously unsupervised handbag. What could have been a result of a child finding her gun?
Dropped on the floor ~ frequently little kids are not strong enough to hold the firearm up very long. That, BTW, is an argument for establishing a lower weight limit for weapons ~ so that if kids get hold of them they can't use them.