Skype - Verizon
Have the Verizon Tab, and Skype works perfect with Skype out. Have it set to show my regular cellphone id when calling someone (which you can do online with Skype), made calls all last night and works great. However one caviat Verizon limits the Skype to WiFi only no 3G.
Now hears the kicker yesterday when I went to the store to pickup you have to activate it just like a cellphone, what was weird is that the device did a *228 and made a call to do this, could hear the activation process just like you would activating a new cell on Verizon. Meaning it has the capabilities to make a regular cell call just that it's disabled. My guess when Verizon kicks of their new LTE 4G service, you "might" be able to upgrade to calling on your device.
My 2 Cents.. in the meantime Skype via WiFi works 100%, and works great with a Bluetooth headset as well..