I'm sorry you had such a rough interview, but it's probably best to find out now rather than later how the company is run. I see interviewing as a two way thing. Not only is the company interviewing you to see if you have what is required for a position, but you are also interviewing the company to see that they fit your requirements. If you felt like you were treated poorly in the process, I would not take the position. He is a leader and representative for the company and if you don't like the way he conducted business, I would be hesitant on how the company is run.

I do think a company has a right to know why you are interviewing for a new job. They need to know why you want this particular position and why you left your current position. If you tell them up front that you left your job because of time and travel and the position you were interviewing for had the same situation, it would be in your benefit to find that out ahead of time. I definitely do not feel it is a poor reason to leave a company. Every person has their priorities, and if company can not respect that, they're not worth your time.

I recently got a new position (I'm an engineer too!) and they did ask about my reason for wanting a new job but didn't pry for more details or try to turn my response as a negative. They accepted my answer. They asked me how many hours I was willing to work and I was honest with my answer. I'm not looking for a job that has me at my desk for 60 hours a week. They respected my honesty and I got the position. Never during the interview did I feel I was being attacked.

Not all companies are like that. You just have to keep looking. A company should value and understand your responses in an interview and decide afterward if you meet the criteria they are looking for.