at the very least, sasuke knows chakra shape manipulation and element manipulation simultaneously (i'm guesing the sword is composed of lightning chakra) like naruto. in addition, Oro wasnt the one who taught it to him..possibly implying Sasuke taught himself. We just dont know if he can use it to the extent that Naruto uses it.

Looks like Sasuke must use the seal in order to do that jutsu. I would think Oro is to Sasuke what Yamato is to Naruto in terms of controlling the seal. He made it, he can break it; and there goes Sasuke's ability to use that chidori sword.