Ebony blade. Is it supposed to be like it is? Mixed 1H and 2H?
My character is now 2H vampire knight, and i think this weapon suits her perfectly from every point of RP.
But i would better like it being a 2H "light" sword, being low-damage but very fast for 2H. I don't want to change it with mods or CK, if it was supposed to be using 1H perks all along. If it's a bug(long unnoticed by bethesda) i would change it.

Would it make sense for 2H warrior to use it as it is? Or it is more for those skilled in 1-hand?

Well, TBH, because the skills required to wield it effectivly are so screwed up, no one really uses it. If you get your smithing high enough and are willing to cap yourself massively on damage for the sake of RPing, then go ahead and use it, but if you just want a powerful two-handed sword, then this is the wrong weapon for you.

It's a shame, because the blade looks so beautiful I guess I'll take the mod then which makes it fully 2H.