There is some pre installed MTP driver on Windows 8 that takes over and doesn't allow me to choose/use another driver. Even after i uninstall the driver, and do the below steps to make windows stop using it's own drivers....it still shows up and works. I haven't found a way around this yet.
1. Go to Start, type change device installation settings in the Start Search box and then press ENTER.
2. In the Device Installation Settings window, select No, let's me choose what to do.
3. Select Never install driver software from Windows Update.
4. Click Save Changes