I was looking at the Chameleon Skinks warscroll (and especially the disapear and re-appear ability. As it says: any reserves that are in hiding and not on the battlefield at the START of the fourth battle round are slain. This would mean that they could hide during the fourth battleround and re-appear in the fifth, maling some end game objective steals possible. Previously I really likes my camo Skinks next to the Astrolith bearer behind the battle Line... And stealing an objective later in game. Glad this is still possible.