Although manga always better than anime. but i always like to give first preference to watch anime episode. As i couldn't entertain myself as much with reading the stuffs and storyline in spoiler manga chapter, as much i can with watching storyline and stuffs. That's why i prefer always anime.
It would be cool if Naruto will use Primary ninja weapon to do fight during fight with sasuke, as sasuke can show off his blade skills. But If naruto get a sword as a primary his primary weapon then, i believe it would be lame weapon for Naruto during fight. Naruto should also indeed use a wrist blade. So he should also use it.
Itachi give Naruto his own power, Since Itachi's most important goal to keep his brother alive. Although that power was almost same as Sasuke, But Itachi knew there will be little battle with Sharingan and Naruto will won over with the use of his power.