Questions:
I was wondering if anyone has tried 3D touch feature on a simulator or rather anyone know whether it actually works there or not.
I know it's a hardware based feature and support is there only for latest iPhone 6S & iPhone 6S Plus models.
On an iPhone 6S simulator, I have tried with Hardware --> Force Touch Pressure --> Deep Press but no gain.
you must develop on a device that supports 3D Touch. Simulator does not support 3D Touch,the documentation from apple, if you need the more information related to this topic, visit this link.
Update
The iOS simulator with Xcode 7.3 beta has an option to Use Trackpad Force for 3D Touch