Somewhat, yes. He's going to have to be careful, since there are people who might recognize someone else with less powerful magic posing as Harry.

Thank you. I've read a lot of fics that attribute Draco's behavior during Hogwarts to Lucius, but I can't see Lucius as being openly abusive. A lot of pushing, though, as with many parents who want their children to be perfect, makes sense to me.