If you haven't used the Steam Controller before, here's a tip: it's pretty reliant on having a good configuration. Different games need different setups.
But many are launching with "official" Steam Controller configs these days. And the one for Dark Souls 3 looks pretty good so far.
The major appeal I can see with the Steam controller over a standard gamepad is being able to swing the camera around a lot more efficiently. The fact that the camera can be bound to mouse-like input, rather than the traditional sensitivity of a 360/XBO/PS4 pad, means you can flick around to check corners far more quickly than you would ordinarily.
The one quirk in Valve's video is the way the controller's being held. Based off my experience, the controller is most comfortable when your hands and thumbs are hovering over the two large pads. You can customise it so the left pad functions like an analogue stick -- the fact that you can tweak and change just about everything is part of the fun, after all.
What about you lot? Anyone playing on PC with the Steam Controller -- and how are you finding Dark Souls 3 on PC generally?