Erwin Lutzer comes to mind here whom may be Reformed, yet he denies Lordship Salvation and also believes in the sinners prayer. I have read many of his books and in some of them he uses the sinners prayer and in one book on Rewards he clearly teaches against Lordship salvation. Is it possible for a Reformed to deny these doctrines? If so I would place him in the same category as David Jeremiah whom is a moderate Calvinist. Although Lutzer has a better understanding on the doctrines of Grace and this shows in some of his books. But in other books he peaches the "God has a wonderful plan for your life" message. So I am not sure about him.