Of course, you will be able to use 3rd party controllers like the 360 pad on SteamOS, so this is more of an experiment for now. it could either be great or be awful. I bet it will be expensive since it is using untested tech, and a touchscreen and unique touchpads and haptic shenanigans will drive the price closer to a 100USD, I am betting.
So, to me, the Steampad is worth a test drive, and we will need on to decide anything on it. It could be a game changer? Yes, but also can be one of many controllers that tried to be different and failed. One thing for sure: it is a try before buy.
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