iPad Keyboard With App Switcher Key?

This post refers to tuaw.com

Megan Lavey-Heaton on the Writer 2 Plus iPad keyboard/case:

I really liked having the shortcut keys to access basic iPad functions such as the home screen, quick-switching between apps, search, etc. A few days later, my keyboard issues were gone as I got used to typing with the case.

I haven’t been able to find any reference to this on Adonit’s website, but man is that huge. The thing I hate most about using an external keyboard with the iPad is having to touch the screen to change apps. I don’t know how they figured out how to do this, but I wish the ZAGGfolio I have did this.