Not a starting spot... But he needs to be on a skill position depth chart somewhere....
There's no such thing as a specialist kick or punt returner... Well not in a 53 man roster anyway...
If he's going to make the roster he needs to be a kick/punt returner and a serviceable 3rd or 4th string RB.
The better he is at returning kicks/punts... The more leeway and patience they will give his transition to being a RB.
Good points. This is why I dont see him making it, i hope he does but i have my doubts. Sounds like you know better than me though.