Yesterday I took it for a field test on one of my TF2 servers to see how it stacks up compared to other controllers or a Keyboard and Mouse. I went in as a Pyro with the default layout tweaked a bit to my liking. Not many people know it but the Steam Controller comes with a built in Gyroscopic sensor not too different from what you would find in a VR headset or a smartphone/tablet. I used that combined with the right touchpad and managed to get the drop on my enemies multiple times. Keyboard and Mouse will always be king IMO but this makes it great if you want to get away from your desk and just sprawl out in another area while doing basically the same thing.
The response time over wireless was amazing, in fact I didn’t notice any latency when I pointed my controller towards an enemy. The gyro sensor does take some getting used to though. I played it with some racing games and it does take some practice if you want to use the Steam Controller as a steering wheel, but it’s fun once you get used to it!
The Steam Controller also supports DOS games. I tried to play some Wolfenstein 3D but didn’t really care for it on the controller. However it handled the original 1996 Tomb Raider like a champ. I didn’t use the D-Pad as I find it to be too stiff compared to your typical controller, but the analog stick worked perfectly. Someone made a config that makes it handle kinda like the old Playstation controller. It was comfortable and I think even better since it has extra places for button assignments. For example sidestepping was assigned to the bottom bumpers of the controller instead of it’s more traditional spots like LT and RT, which to me felt more natural.
Overall I still haven’t regretted the pre-order. In fact it keeps getting better and better with every update. They recently introduced a shortcut menu that you can use to bring up keyboard shortcuts. It’s handy if you play games like Skyrim which have a big keyboard layout.