Exactly. You don't need to fling your arm as hard as you can. In fact, that can be counter-productive. Piercing swords are more elegant, though.
You mean like rapiers? Yes the later style of fencing was elegant, but have you ever seen Italian 15th century longsword? It's the most elegant style you can imagine.
The first guy in that video is a specialist in two-handed longsword more than he is with single handed weapons. He studied medieval combat texts written by Fiore dei Liberi, this is his main site, but he has loads of videos on you tube as well.: