I went overseas recently and my usual mobile carrier for overseas didn't have roaming. I added a bit of credit in Skype through the app and made my first call using the app. I was surprised at the great quality of the voice call and the ridiculously low money I spent on a 30 minute call.
Skype for Android has grown on my since then, and now I have it for intercontinental calls over the phone at home. It works great every time. There is a free option in Skype that allows you to associate your home phone number with your Skype account, so when you call somebody from your Skype app, they will see just your home phone number in their screens, which is very convenient and useful for me. Of course proper verification is needed for that. This feature works just in some countries, so check if yours is included in advance.
Skype on the Go is another feature that you can use in the app. It could be great, but it is just an emergency feature for me. The good thing is you can call from your Skype add without the need of having internet but, on the other hand, you need to call an assigned local number to make the call through it. So, it is OK for an emergency, not for my normal calls. This feature works just in some countries, so check if yours is included in advance.
If their fees were cheaper, I would certainly pay for my own Skype number and use the app for phone calls all the time, but I don't think the yearly fears for owning a Skype number are reasonable.
