Well, You now can, with new: The Novint Falcon Orange Box Game Bundle With Pistol Grip

Well Valve have just released updates to team fortress 2, half life series and portal to be compatible for this new product. This is From The Novint Website:

The Novint Falcon is an entirely new type of game controller. Replacing your mouse or joystick, the Falcon is, essentially, a small robot that lets you experience true virtual touch unlike any controller in history.

The Novint Falcon lets you control a game in three dimensions, and also lets you feel high-fidelity three-dimensional force feedback. The Falcon controller moves right and left, forwards and backwards, like a mouse, but also moves up and down. When you hold the Falcon’s detachable Grip and move your cursor to interact with a virtual object, environment, or character, motors in the device turn on and are updated approximately 1000 times a second, letting you feel texture, shape, weight, dimension, and dynamics. The Falcon lets you control and interact with games in more realistic way, allowing you to develop real physical skill and muscle memory, adding a new dimension to gaming.
More of this from http://home.novint.com/products/novint_falcon.php

It also comes with a Pistol Grip:

The Novint Falcon® Pistol Grip is the Must Have FPS Accessory For Falcon Gaming. The Pistol Grip attaches to the Falcon, replacing the standard Grip for an incredibly realistic gaming experience that lets you feel realistic weapon recoil and force feedback.
This looks like a must have, at around 150 Dollars, around 90 Pounds, I MAY get it, but it all depends, can you play as well in TF2 With this new gadetry, we will have to find out.