Actually...I dont understand what you are saying. This is what already happens in TES. If your skill with an armor type or a weapon type is low, using that weapon type is a waste of time.
I think the thing here is that this applies equally to all weapons. If you try to use a Daedric dagger with ten in the appropriate skill, you'll be just as bad with it as an iron dagger, the dagger still does more damage, but your skill affects your ability to use it in the exact same way as how it would with an iron dagger, which makes perfect sense. A Daedric dagger is not fundamentally different from an iron dagger in it's design, it's basically the same thing, just made with different materials and a higher quality construction, so there's no reason it should be any harder to use, either way, you use them in exactly the same way, one is just more effective than the other due to higher quality construction, and that quality isn't going to magically become irrelevent because you're not skilled with it, your ability to use both would suffer the same amount. Now, there are some weapons which are actually harder to use than others, like say, longbows versus crossbows, a longbow requires much more training to use effectively, so it would make sense if you need to have a certain level of skill to be decent with it while a crossbow wouldn't have the same requirement, but that's a special case, and it seems at this time that crossbows won't be in the game anyway.
If I somehow manage to acquire Daedric weapons at level one, I DESERVE to be able to use them, if you don't want to have loot be scaled but still want to keep people from using certain items before they're "supposed" to have them, then have them guarded by powerful, non-leveled enemies a low level character is unlikely to be able to defeat, it's simple, really, and if some people manage to still get them any, it means either those people are skilled or the enemies weren't strong enough after all. If it's the first one, then I think those people have earned the right to have better weapons than they're "supposed" to at their characters' level, if it's the latter, then maybe it's time for the developers to examine the game and see if they did something wrong.