You can assign macro or function to keys on your keyboard, why the need for the extra hardware?
https://support.microsoft.com/en-us/help/237179/assign-macro...
https://support.microsoft.com/en-us/help/237179/assign-macro...
We've acquired a Surface Book, which as you probably know can be used as a tablet or as a laptop. The tablet part can also be reversed and closed back on the keyboard. This makes for a very nice graphic tablet!
The only problem is that, in this configuration, no more keyboard for the essential shortcut used while drawing in Photoshop and the like.
One solution is to plug an external keyboard. Another solution would be to use this!