I installed this earlier today and is working perfectly for me on my gn2. I also have an Otterbox Commuter case on with no problems. I do suggest increasing the "Activation Area Thickness" to give yourself a bit more room due to the loss of your car if you have one on line the Otterbox.
I've done some tweaks with it and so far this is a great app.
I'm stock rooted with some hacks, but no custom ROM.
Sent from my SPH-L900 using XDA Premium HD app
Sent from my Samsung Galaxy Note 2 on CleanROM ACE 4.2.5 with Pie Control.