Honestly, I'm not really comfortable with it.
Luke seems like an ok guy, but I don't really trust him.
I would sooner have Kenny looking after her, not only cause he and my Lee were pals, but also cause I know him, and I know what lengths he'd go to to protect her.
Luke hasn't shown how far he'd be willing to go, yet.
After all, he ran off when Carver took the others hostage.
Kenny's the only one who stuck around and tried to save them!
That's another reason why I don't feel comfortable with Luke looking after Clementine.
How about you?