Well your quote is saying it was common to leave an empty chamber under the hammer, so that’s about as safe as it gets.
It wasn’t/isn’t even uncommon to carry a revolver in one’s pocket fully loaded (with a round under the uncocked hammer), but generally there would be a trigger guard to help prevent the trigger being pressed through one’s clothes or by other contents in the pocket. But these would also generally be double-action revolvers with very heavy triggers.
Well your quote is saying it was common to leave an empty chamber under the hammer, so that’s about as safe as it gets.
It wasn’t/isn’t even uncommon to carry a revolver in one’s pocket fully loaded (with a round under the uncocked hammer), but generally there would be a trigger guard to help prevent the trigger being pressed through one’s clothes or by other contents in the pocket. But these would also generally be double-action revolvers with very heavy triggers.