There is a diffrence between
There is a diffrence between a Shock Pad and Force Feedback
I am aware that the pad does have a shock mech however it's no force feedback and I beleive the existing microsoft force feedback devices should work with the xbox with a cheap adapter as the force feedback devices cost about £100 and expecting Pc users to buy a second feedback steringwheel is a bit rude
If microsoft had put in a gyroscopic motivator that would make the controller force feedback and would be very impressive however i very much doubt that has been done as it would make the controller very hard to hold