I have been brain tanning deerskin for the better part of 15 years. Modern tanned leather would be useles. The chemical bath process alone will destroy most nutritional value (I have used them a few times but they really are nasty chemicals). I have an extensive library on the old west, civil war, and Rev. war. Many stories about boiling hides and naturally tanned leather to make a soup mixed with any edible vegitation around. To eat your leather coat or the saddlebags on the Harley would probably finish you off rather than save you.
"Who are the militia? Are they not ourselves. Congress have no power to disarm the militia. Their swords, and every other terrible implement of the soldier, are the birth-right of an American...(T)he unlimited power of the sword is not in the hands of either the federal or state governments, but, where I trust in God it will ever remain, in the hands of the people." (Tench Coxe, Freeman's Journal, 20 Feb 1778)