I have yet to see anything that indicates Patterson couldn't get significant action right away as a WR, I also feel confident he'd be the KR right away.
I'm sorry I just don't like to see the word "RAW" when talking about a top 15 pick. I don't see that as a day 1 starter. I also don't want to spend a top 15 pick on a special team returner. I really don't want our 1st round pick risked on a special team play.