I've always used his email contact.
No one can completely "reassure you" as there is risk involved with every business -- especially the autograph one. I'd advise posting the one you concerned about on this site as you will get some good opinions. Then it is up to you to decide.
I have used Roger a number of times for quick opinions but it has always been via his web site. He is trusted & shows a great deal more integrity then anyone else I have dealt with. I would suggest a) submitting the QO via the web site and b) posting here for additional feedback.
According to FB, Roger left for vacation in Bali yesterday.
Doesn't he have a business? It sounded like a house or something when I got the answering machine.
i belive he works out of his house