I shall look up those refs, Reuben! Great.
These days leather robes have a range of entirely different connotations!
For instance (he wrote coyly,) perhaps the leather robes were to start them off on a blacksmithing course!
They had already done a class in cookery hence the 'aprons' of fig leaves a few verses earlier!
Apologies for my whimsy! But I'm actually agreeing with your point about the mainstream interpretation of the clothing of skins / leather verse. It's difficult to interpret and subject to a range of readings. Maybe the bible writers simply put that phrase in as a convenient way to explain, in a purely assumed factual historical way, why mankind generally just happens to wear a lot of clothing? You can certainly read Gen 2:25 in several ways. From a simple statement of fact, or a statement of how things should be, ( that is, naked and no shame needed) through to a huffing & puffing tone of disapproval (Naked and unashamed? How sinful!).
John