Didn't find any things similar through search so I'm writing here. Maybe it wouldn't be bad to have some new spar armors and weapons available, so there would be easier way to train with your buddies. Atm if you wanna train your melee hits, you simply cannot do it in a way to avoid damaging your sparring partner armor. And without training that, just ua isn't good enough.
Maybe simplest way to do something is to make a wooden sword, that would do like 1/10 of the dmg that steel sword or other weapons do, then you can already use leather armor for defence (easily made).