Uber Entertainment has used the Steam Controller and likes it.

http://www.pcgamer.com/2013/10/04/uber-entertainment-has-used-steam-controller-and-they-like-it/

The only thing I am really wondering about is the texture of the pads?

[Edit]

Man, you find everything quickly.

So how much was Uber paid for this? Did they get the controller for free? ;D

a) Do you guys get to keep it?
b) Dark Souls!

I honestly want to test that controller on oldschool snes emulators so I can see how well with games designed for buttons on the right side.

We wanted to test it for using with PA and I think it could totally work. As far as texture on the pads, those things are still being worked on. Valve prints different pads daily with their in house 3d printers. I saw a bin full of old prints and various pads.

Got any ideas for the button and screen layout in PA and SMNC?

My dream of being able to buy any PC game without needing to check if controller is supported

I still don't find any trackpad as usable as the mouse.
I don't have the same fine tuning on my thumb than on my whole hand+arm.
You can't have the same sensivity on a 3cmx3cm using your thumb on a forced way than on a 10x15cm surface with a natural movement.
It may better than a controller, but I still think that key+mouse beats over any other gaming input device, esp. for shooters or RTS.

i agree, for those specific genres.

Don't think anyone expects any controller will ever be as good for fps gaming as a mouse. Trackpads are still a big improvement over joysticks though.

Nice and Dark Souls <3