hopeful, but reserved

So that job that I applied for as mentioned in my last post called me in for an interview...I decided to try and really prep myself, you know reading books about interviewing and selling yourself etc. So I pulled together a portfolio, had some responses ready and went in. And I was way more prepared than the guy was. I got the feeling that he wasn't comfortable doing interviews and had no idea what to ask or say. So I'm really sure how it went. What they do is very, what's the word, exclusive?, so I think not many people can say they have experience doing that. I am going in next week to see the work flow in progress and "shadow" for a half day; basically it's a way for both of us to see if I can and want to do this or not. All the "others" are positives (pay, location, environment, benefits) so we'll see if the actual work is a positive or a negative.