No, that is the consolation prize that nobody wants. When the .com is taken, you obtain an alternative .com.
Oh, and don't group .mobi and .tel together like that. 100% of what you can do on .com can be scaled down to .mobi since .mobi is something more than .tel data entry.
.mobi is for .com owners to offer a mobile version at. The mobile redirect that is now in common use has made .mobi obsolete, and that is why .mobi has now moved into the design business with products such as
Instant Mobilizer That IMO is now .mobi's draw.
Here we go again with this .tel directory malarkey.
Let's talk about legit businesses that want a mobile presence and not wannabie developers. Since we are domainers, we need the people who can afford to pay decent money for domains to become interested. The .tel directory builders are at the very bottom of the web development totem pole. They mean absolutely nothing to the future value of .tel.
Look at MOBILE.PIZZAHUT.COM and give me your most persuasive argument why they should have chosen PizzaHut.tel instead of doing that.