lol. Non-responsive? Perhaps the problem is that it is not the answer you're hoping for. The answer assumes a fallacy at the outset. Someone who is "saved" is most likely not a Roman Catholic. Not for long. And someone who is saved most likely would never regress by becoming a Roman Catholic.
Hope that's clear enough for you.
I have absolutely no problem answering it, except that it's irrelevant.
Humor me. You may want to think it's "irrelevant," but it's far more interesting that you seem unable or unwilling to give it a shot.
Did God know everything that would ever occur in time at the moment of creation?
Not responsive to the question, again. One more try:
Assume that "most likely" means that there is a chance that one will get through - a saved from the womb person becomes a believing Catholic - any effect on his salvation according to double predestination?
Humor me. You may want to think it's "irrelevant," but it's far more interesting that you seem unable or unwilling to give it a shot. Did God know everything that would ever occur in time at the moment of creation?
Which part of "God is omniscient" is unclear to you?