I also have no real use for the clock and the track gadget. But it comes with the GTS and at least looks neat on the dashboard. I wouldn't have it ordered if it would be offered as option, like on the other models. The compass you can display digitally, but I also do not really have a use case...
https://www.porsche.com/usa/porsche-connect/digital-key/
Look at the FAQ.
I had exact the same question after configuring my GTS. I also come from Tesla and learned that the Porsche Digital Key works differently. With this option you end up having 3 keys.
1. Digital one (even works when your...