The statistics, that are kept on the subject of accidental discharges, say that most of them happen when a handgun is taken out of or returned to the holster.
How about using an UNLOADED firearm? It isn't that hard to insure safety. I still say that if you are unable to insure that your firearm is safe then you are not ready for advanced gun handling anyway.
Get the basics of safe firearm handling down pat and then move to a more difficult exercise.