Yeah, constantly, the easy example is keyboard input, the dual trackpad input is really nice to use. I wish they were a hair larger and round like the original steam controller becauae they were amazing on that, but even then, rotary menus are an amazing feature and the trackball mode is really nice to use. They're a heck of a lot nicer than the joystick mouse for me.

Nicest part about the deck/controller is the flexibility, touchscreen helps add even more utility but the original controller could totally be used for keyboard/mouse heavy games on the couch, some people go wild with multiple control layers and button chords, there's a lot of ability to customise things which is appreciated.

I use both very often. Especially as a custom menu for emulator settings, or in older PC games or games with a lot of Keyboard/Mouse controls, they help me make things far more comfortable with various custom popup menus, or sometimes jumping to a mouse region to select UI options while playing. They are also helpful for games with horrid controls/hotkeys that won't fitnon a traditional amount of controller buttons. They also help with mouse precision when an analog stick won't do.

I also use the back buttons a lot. I use the entire Steam Deck and the custom controller settings are basically a necessity.