The only question left is who sits in the press box. When Dermott is back, it's going to be Dermott and Ozhiganov on the last pairing. Do you risk losing Holl, Marincin or Carrick on waivers and keep Rosen as the extra? Obviously if Dermott isn't ready for the first game of the season you keep Rosen up based on his play so far. So they might be forced to waive all those guys. Carrick did himself no favours last night and at the end of the preseason, you need to hit the ground running with your best options. He's not one of hem.
Clearly the answer is yes. you don't worry about losing any of those 3 guys on waivers even a little bit.