Nice thing about walking up to someone's how is maybe they are home! Now you can do a face to face conversion rather than a piece of paper!
I'll take face to face or via phone any day as I can usually make a conversion pretty quickly. I also use many of the conferences I go to in order to find out who has web hosting, how they found their current host, and what they like/dislike. I never try to pitch my host until they ask. If all you're doing is collecting information, usually THEY will pitch to you asking how you can help them!
Sales is really an art, and a good salesman will let the client be the one asking for more information. But like anything else, you either have it, or you don't - there's limited middle ground. You HAVE to be approachable when doing face to face or on the phone.
Regarding Overnight Prints - I've used them a dozen times or more, and have been more than satisfied with results. They were cheaper for me to work with than VistaPrint when we sent out our holiday cards last year. I use Vista on some small print runs, but overall Overnight Prints usually gets my business.