O, but I use now frequently a two-handed sword (Arben's) and put NO skillpoint in it!
But by me this sword has 1 point in this skill! + when I began the game I got 1 point in that skill (Dragon Slayer skills, many of them I got 1 point of it in the beginning of the game).
So, you can use such a sword (or another weapon) without putting many skillpoints in specific weaponskill. For sure your
expertise increased with such a skill, but not a "need" to have.

It's ALL yours to discover, to experience, to have fun ....
I love this game because it don't hold my hand! I must dicover, etc ... all things on my own (or asking my questions here on the forum

).