The only issue that decides this question, is do you truely have Him, His presence in your heart?
- - - - -
Interesting you list Mormons you know that do, since this is NOT Mormon belief or teaching. They may say something similar or dance around it, but they openly reject a personal relationship with Jesus Christ.
Mormon Apostle gave a talk at BYU on this very subject:http://speeches.byu.edu/reader/reader.php?id=6843
Also, can you have Jesus in your heart when you believe in a false Jesus, one that is not eternal, not always God, elder brother of Satan, etc.
So, while I do believe Catholics can, Mormons cannot. If they did then they would leave Mormonism in a shot. I’ve seen it over and over again. If you have a relationship with Christ, you cannot stay in Mormonism very long at all, much less believe any of it.
It seems this way from some perspectives, but I believe George Washington was saved! and he was a Freemason.
True ignorance appears to be different than diregarded truth. However, His hand is obvious thru-out creation, so none can freely claim ignorance to His existance. That is why so many seek, so many directions, to cover that missing relationship.
Those raised in belief, may never have truly sought. Seek with all your heart and you shall find. A luke warm heart will be spewed out. Don’t settling for mere traditions of men, those which condradict His whole word.