Supah said:
How would a level up be handled then? Unless they handled it well it could feel kind of like empty levels, although at the same time its an interesting idea.
I think the point is that there would be nothing to show that you did, in fact, level up. Think of it like a combination of Skyrim and EVE Online in regards to how you get abilities, only minus the numbers.
It should work like in real life: for example, let's say you grab a guitar and try to practice with it. Obviously, if you're just starting out, you're not going to be very good at it - unless you're replaying the game or something, I don't know how replays would work. So you dedicate some time to practicing the guitar, and after a long while, you're actually good enough to perform in front of other people without even realizing or seeing the transition.
It should be like that with swords and leveling up: you don't see any of the transitions, but you know you're getting better, and it'd feel more realistic.