because of the unique shape of many different dynamic objects it would be near impossible for me to do this, as well as the fact the engine removes the weapon whilst carrying objects, so essentially, i cant display anything.
but realistic carrying has never really been used in a game, think of an RPG, something like oblivion, you dont see the character reach down to pick up the items, nor in any other game, some attempt it, but it is often very sloppy anyway, just a crouch down and the item dissapears.
overall, its not a must have feature, i hope you arent put off.