Before you start posing, you never know exactly what body position will feel and look natural. (That's why you hire a professional photographer, right?) In this case, I very carefully posed Ron, first demonstrating myself how I wanted him to stand, the position for his feet, and showing him where to rest his left hand.
Also note that I felt comfortable putting him in front of powerful and contrasty vertical and horizontal lines, which make a very strong composition. That's just the initial set up. With a little bit of coaxing and joking, I evoked this great expression.
Does it look believable and GQ? Absolutely!