Holloway's Tattoo (spoilers inside)

Corporalhiccups
MemberOvomorphJune 05, 20125185 Views4 RepliesI just noticed that Holloway has a cross tattooed on his right shoulder (clearly visible in the eye worm scene). Isn't he supposed to be an atheist? Surely such an obvious contradiction of character wouldn't be accidental? Does this maybe hint that Holloway used to be religious but lost his faith after some tragedy? This could make sense if he is Shaw's opposite: she kept her faith even though her mother and father died tragically; Holloway turned his back on religion. This might be why she survives and Holloway does not. Her faith is rewarded.
Am I reading too much into this? Don't tell me Logan Marshall Green has a cross tattoo so they just left it in.