Board Thread:Off Topic/@comment-26397825-20150712053515/@comment-26198742-20150712110440

If they do make it possible and canon, they would limit the arms abilities to certain abilities that a Demonic Arm has.

So if they made it possible in the show they would mostly likely give the user with a Demonic arm Enhanced physical strength, Enhanced Durability, Claw Retraction(This is 50/50), and possibly a healing factor

Also Spirited, Devil Arms in Devil May Cry are weapons that are created from the souls of demons or are of demonic origin(Dante and Vergil's swords Rebellion and Yamato are Devil Arms)