I saw a discussion on here about the nature of the thing, how you are effectively learning to use a new control method. Some were saying it is a proof that the device is flawed but I feel this is due to the homogenising of controls over the PS3/360 gen. Essentially, a "correct" method was found and every game worked to template. You could pick up any game and pretty much know the buttons before you start. As such, anything deviating from the norm feels wrong.
Here is a case in point. I picked up Resi4 on PC and enthusiastically picked up the 360 pad for a run through. Christ, I could not control it at first. My right thumb was continually wanting to move the camera, the concept of going into an aiming stance was totally alien. Eventually I found the groove and became comfortable with the controls.
I'm looking forward to having a go with the thing but I feel like there will be quite the period of unlearning to go along with it though. Worth persevering, I cannot play Mass Effect, Left 4 Dead 2 (controller on this is terrible), Planetside 2, Oblivion and a multitude of others without it. I'll still head to the 360 pad for enabled games, so Fallout 4, Skyrim, Deus Ex... the whole lot just feel fine on it. I still see the Steampad as an accompaniment but it certainly frees up a lot of the catalogue for non-deskbound players.