WB Montreal Creative Director Eric Holmes confirmed that while the two new skins are available for use in the new DLC, gamers will also be able to utilize them in other challenge maps as well. There was no indication at this time that the skins would be available for use in Story Mode at launch or on a later date.
via N4G: pc news feed http://n4g.com/news/1406150/batman-arkham-origins-initiation-bruce-wayne-skins-playable-in-other-challenge-maps
via N4G: pc news feed http://n4g.com/news/1406150/batman-arkham-origins-initiation-bruce-wayne-skins-playable-in-other-challenge-maps