I purchased and installed this screen protector as I have used them on my iPhone, iPhone 3g, and iPhone 3GS. I thought I was about to go crazy until I got this thing in the mail. I do not like using the bare screen. My fingers catch too much on the oleophobic coating and with the protector they slide easily across the surface. In addition, I don't have to wipe it down all the time and the glare of surrounding objects is softened to the point of being trivial.
The device is a dream after installing this product. I couldn't believe how much better it felt and reacted. Now when I'm out in public I don't have to be embarrassed about my dirty oily screen that I have to rub on my shirt (belly) every 10 minutes. It's also much easier to draw on now, which is something I use it for a lot to do mockup drafts of assignments in class.
These is a slight fuzz to things when you look up close, but I find myself holding the iPad much further away from my face than an iPhone, and also find the benefits to outweigh this small shortcoming. I highly recommend this product, though its biggest downside is that it only comes with one! For $25 you'd think they could include two flimsy pieces of plastic. Also, at least for me, it was pretty trick to install. Make sure you turn off the A/C and let the air settle for awhile before applying. I wiped the screen clean several times using professional lens cleaner and microfiber cloth and there were still tiny pieces. Work quickly! And use scotch tape to grab the pieces trapped underneath. Use the scotch tape to pull the protector back up also. If you use your fingernails on the edges, it can bend it and it might not go back down flush. I learned this tip from a "genius" at the Apple Store. I can tell you from experience that this is true using iPhone versions.
Attached is an photo I snapped using my 3GS: