It doesn't matter what denominational workers think of this preaching. It doesn't matter what his preacher buddies think of his preaching. It doesn't even matter what his current congregation thinks of his preaching. If you get all your committee members agreed that this candidate can cut it in the pulpit, it is time to go the next step. Jesus called us to be and make disciples.
Disciples are learners.
Another word is student. It is a curious thing because no one wants to be a student when they grow up. We want to graduate. We want to arrive. We want to get there.