yeh... i'm abit unsure of it but i'm getting it anyway and i'll post some pros and cons up here once I've had a good go with it. i just find the controller harder to aim (then a mouse) with since conforming to the console religion
I've never tried it but seen it in the past and I was interested. I never came around to buy one, considering last time I checked they were a little high in the price and I don't know anyone who uses it. So if you do get it tell us how you like it.