Very informal, but still professional. The owner is very direct in his questions and he was upfront about expecting direct answers. I mentioned that I did not have the experience necessarily, and he advised that he could teach me everything as long as I paid attention and was willing to learn. I got a much better hourly wage than expected, because according to him, if you pay someone a good living wage from the start, you get a dedicated employee who doesn't have the concerns and distractions while working of looking elsewhere for a better paying job. Really enjoyed the interview and was put completely at ease from the start.