Many of my friends/former co-workers worked for this guy when he ran Gateway Mortgage. I've not heard anything positive or negative about him other than he's incredibly religious and tried to run the company that way. The company I work at has owners who are very religious but they don't try and proselytize. That's not saying Gateway did that, but I did get that impression from some former employees.
My wife worked directly for him, and if you asked her she would say there isn't a more respectable and dedicated business owner out there. I met him several times at parties usually, and because my wife helped him and his family on some side businesses. He was always completely interested in what I did professionally, and would remember exactly what we spoke about last, no matter if it was 12 months prior. The guy could sell ice to Eskimos so to speak. His hard working personality is infectious. His company has been on the Inc 500 fastest growing companies multiple times. They just built a brand new headquarters around Jenks. He made a very risky decision during the mortgage "implosion" to no longer sell off mortgages to bigger institutions. From that point they maintained ownership of all loans, and fully service them all. That decision turned out to be an extremely wise one, and they have been growing throughout the recession.
He is a fairly religious person, all though I wouldn't really have known it just speaking with him. It's not as if he brings it up incessantly. He just comes off as an extremely ethical person mostly. Very inspiring, and exactly the opposite of Trump when it comes to "appropriateness" and respect for the office.
I will have no qualms voting for him even though I seriously doubt I agree with him on everything. I just think this type of person is what is needed at the moment to rinse off all the filth in OKC. Should he win, I bet this will be his last elected office (outside of school boards or something local).