The Scout GPS is pretty clunky to use and seems very archaic compared to Google maps on my phone already. But for basic turn by turn notifications, it works. But beware as I have found some of the maps to be outdated in my area.
I agree - I like having the integrated navigation. The HD Traffic has been very useful in rerouting around traffic jams.I have the integrated Nav on my XLE. I think the Nav system is actually pretty good. I had heard a lot of negatives about built-in vehicle Navs, but I honestly feel it works as well as the portable GPS I own (granted this GPS is several years old). It's not as good as say Google Maps though, but I like the ease of the directions coming through my vehicle and it will also show directions in the driver dash/infotainment. It does not allow you to input an address while driving, which I've heard complaints about. You can pre-program addresses though, which you can choose while driving. You can also verbally input addresses. I have not tried this. I've heard people say that feature does not work very well.
To get the integrated Nav you do have to purchase the Premium Entune Audio Package. It's a $525 upgrade. Personally I don't think it is a bad price for it compared to what some competitors charge for built-in Nav. If it were creeping over $1000 I would have foregone it, but I'm really glad I did get this. Personally I just like the looks of the 7in screen better on the dash, and the fact that you can have a map on your screen while driving. There is nothing special about the audio quality though. This option also gives you access to apps on the touchscreen for things like Pandora. I really have not used these as it will use your phone's data to work.
You may want to look on YouTube to see if anyone posted a video with the GPS app. Also note that if you do go for the upgrade package you lose the CD player.