The one inspiration I always cite is Humans of New York. The person talks to people he finds most interesting during his day in New York City. Although, what differs between the 2 of us is that he's photography-based, while I prefer audio.
Cam models are not the only people I'm interested in. The first people that come to mind are the homeless and people who are disfranchised. Who are they and how did they get to where they are? I'm not comparing any of my subjects of interest, beside that I feel the public do not often hear from these people.
I have interviewed people, but not with audio equipment. I've found that when I write up a person I had e-mailed, the article becomes one-sided. The questions are my own, the person does not ask anything in return, and the interview process is too formal. In the end, it's a boring read.
I have little access to personal transportation, so the city is my best bet. As far as reimbursement goes, I would pay for a MetroCard or cab fare. Also, I would prefer not to buy a person’s story.
My sense coming from the responses is that because of the intimacy of a models work, an in-person interview is unlikely.