OK, no offnese, it sounds crazy to me now. Is this testimonial supposed to happen live for some reason? I may have misunderstood.
Considering the stakes for the sales piece, and the fact the rest is hi-def, it makes no sense to me getting such a vital piece of your program as a low-rez stream like this. Whatever the product or service is, the guest speaker would have to be amazingly important to overcome the limitations of the format, and if that was the case, he or she is worth shooting properly in the first place.
If this is not supposed to be live, but to be edited into the high-def program layer, then it should look better and not be much more expensive to hire a guy in the town where they are to shoot them on location. This might be done, depending on the place and the guy, for maybe a half-day rate around 200-500 dollars. You put a speakerphone in the room and direct the cameraman and talent over the phone, audio-only. He then overnights the tape to you or FTP’s it to you over the internet during the night. If you send the shooter a list of shots you want and diagrams of the framing, all should be well. This is competitive price-wise with anything you can set up via video-phone from the local Kinkos or etc.
Locating an affordable shooter with an HD or HDV camcorder close by the talent is not insurmountable. Companies like Crews Control and others do just this sort of thing for you, and pre-qualify the quality of the shooter so you don’t get an incompetent wannabee for your money.
Seriously, if it’s worth doing, it’s worth doing well, and you shouldn’t dismiss the notion until you really have explored the options available.
We do satellite shoots like this all the time to feed interviews to remote sites around the country and 15 minutes SD with an audio IFB link to the talent is really very reasonable if you can get them to the local studio or truck.