The SteamDeck is an interesting device, but not only if you're a gamer! The SteamDeck runs a modified version of Arch Linux, which means you can natively run compatible Linux applications on it!
This means you can run the desktop Linux version of TouchOSC, and use the built-in gamepad controls! This opens up a lot of possibilities for remote control and performance!
We added some documentation for this on the TouchOSC manual page:
Now when you need to take a breather from setting high scores, you can work on your layout or perform with it!