I would think they would want to keep him fresh, but I dunno, he might need a couple practices first.
The way I see it is, he's not coming from the CHL, he's coming from NCAA. So he's already used to playing with bigger stronger players. In that sense, he shouldn't be too overwhelmed. And he also has the wheels to keep up with a faster game, so thats a plus too.
I'm pretty sure Arniel stresses defence first, much like Vigneault. And from what I've heard, Schroeder has a pretty solid two way game. So IMO, he should have all of the tools to get in there right away, as long as he gets a practice in on Thursday.