Agreed. For Amritdharis. I'm working towards that (but not there yet).
That's a complicated area. I have a collection of swords and knives -- some I made, some I bought -- and they are a variety of shapes and sizes. It depends on what you need it for - the conditions under which it will be used -- and by whom.
And the training the wearer has. (A person with no training, in my opinion, shouldn't be wearing a weapon -- he's a danger to himself and others.)