I bought this product because I started having a bit of problem with hand when I use mouse for long period of time.
It works quite good even without drivers, which you have to download from the internet by the way. That's good because you can take it to your friend's PC, work or wherever. But, off course, you can't use all functions.
I have problem with two 2 fingers and 3 fingers gestures. Rotation using 2 fingers work, but with bit of a fight. It's not easy to use. Zoom works surprisingly fine. Rotation works too. But I don't have luck with pan/scroll using 2 fingers. However, you can still use areas allocated for that - right side and bottom, which works fine with a bit of practice. And I have absolutely no luck with 3 fingers flick gestures, even though I successfully minimised all programs one time.
Although it has some bugs, I would say that it is worth the money I paid. You can use touchpad and mouse at the same time. Worked even with old game I tried. I like adventure games so I think it will also work good with them.