Yeah I pretty much completed factorio on the steamdeck, with some pc play over cloud sync. Had a really good experience. The right touchpad is just a mouse, and you can bind any button to any key! (Including shift etc, so you can have endless combinations!)

I started off using one of the most popular steamdeck community layouts, and then customised it to make my own (drekly’s layout should be on there somewhere!)

Furthermore, I logged in recently to see there are new controller settings, so I think they may have patched the switch style controller options over to the pc version, with specific steamdeck controls. I’m so far in I’ve stuck with my mouse+kB layout though!