Luke could accompany Abalon and the others to the Goldenrod Gym, and even Teleport them out of there if things get hinky with his level 3 Psychic powers. That could solve anyone's unmasking problem--and mine as well, since I don't want Luke to get outed either.

As for pokemon...he has a Snubbull, a Zorua who won't want to associate with him, and a Magikarp. :|b