I just tested this with my tablet and I noticed when you pair it, the icon would lead me to believe that the N10 thinks the trackpad is a joystick, not a touchpad. I wonder if there is a way to tell the N10 what the device actually is.
I had the same concern you had but decided to go for it as this is the device meant to push developers into making proper tablet apps for android. I have come to a realization as of late though: It doesn't really matter.
Don't get me wrong, stupid little phone apps blown up onto a huge glorious...
It really depends on the game. You have access to all the buttons the controller would have on the screen, but they are not necessarily all easily accessible at once. Some games really don't use more than a joystick and a button or 2.
Dicking around and just noticed if you go to Settings --> About Tablet and then tap the Android Version rapidly (must be quickly) it will take the tablet to a nice little surprise.
EDIT: Just did this again and the results aren't the same. First time, it brought up Jelly Bean and a big bean...