What's interesting is neither has had any first hand experience (that I know of) using the 3 Skype service in the UK as I have. If they did, they would have been even more effusive on the positive side of things in their commentary.
First, from a price and performance perspective, I can't make calls any more cheaply in the UK while on the go than I can with the Skype phone from 3, running iSkoot's technology. Once 3 opened the service up to allow Skype Out calls, it was game over to any other carrier for someone who has to reach a community of people I deal with the way I can via Skype (or for them to reach me) or to make International Long Distance calls. The only rival is client Truphone and that's because their service is a mobile phone derived service at the core. The Skype phone though has the second largest telephony addressable audience in the world, next to the regular PSTN, so when the two are combined, 3 wins the game.
The key is presence. I spend almost no time leaving voice mails, as the presence data available via Skype makes it easier to reach someone I need to talk to. After that, everything else is just another feature.
By selling Skype as a service now, 3, is going to sell more data plans, and connect more people to more people. Other carriers should carry the same idea forward. What's more, since the new SkypePhone2 can be tethered, I can always us it connected to my laptop as a 3G modem, making it a great value for those who don't want to buy a separate 3G stick or card.
To me, both Om and Rich have made solid points why some USA carrier should embrace the SkypePhone from INQ. It will be a win, once their networks can support all that Data traffic of course.Update: Jim Courtney weighs in with his thoughts a few days after this post.