Sorry. Didn't mean to put words in your mouth, but when you said:
Some (of reprobate mind) will never chose Christ as mediator,
that seemed to imply that someone who would never choose Christ as a mediator would be one of reprobate mind.
I won't choose Christ as a mediator. I'm WAY out here on a limb, insisting that -- oh, the damnation I face -- but really, God knows better than to think any allegiance I would offer to Jesus would be genuine. In the eyes of the God you believe in, I am, in fact, reprobate.