I think I just found a site that has some very cool-looking miniature swords fit for SD use. The proportions of the blades look correct (they don't have oversized handles like most letter opener swords), and they look very detailed too! Browse by over here and here, they're different shops selling the same series of swords by Art Gladius. If anyone orders any of these blades and gets theirs soon, could I ask that you post pictures of one of your SD-sized wards holding them? Strike a good pose, too.