The utility of the whole Surface Book package is formidable and, for me, this is where it is worth the premium they are charging for it. Microsoft really have nailed it. Most of the time it's just a laptop and for that there are zero compromises over any other small/light notebook. Not content with that, however, Microsoft have taken it to the next level, giving you features that extend the utility of the Surface Book beyond anything else available.People who look at it is a device that is trying to be a laptop and a tablet simply aren't seeing it for what it is. Maybe that's why Microsoft are calling the detachable section a Clipboard, not a tablet? What it really is is a laptop that does not stop being useful just because you are not sitting down or at your desk. It is a laptop that keeps working when you are lying flat-out on the sofa after work, when you are standing in the train on the way to work and even when you are walking around at work. It is not trying to replace your iPad, it is trying to make your laptop a whole lot more functional.And it succeeds rather well. It's a great laptop with all the things you want from a workhorse. Then, when you want more, there is plenty waiting for you. In the two weeks I have had mine I have already used the pen more than I did in a year on my Surface Pro 2. Why? Because it's right there, stuck to the side of the Clipboard, ready to go. No need for a mouse and you certainly won't need the trackpad, although it seems as good as any. I've read that the screen wobbles but I've not experienced that myself, possibly because I find it far more natural to write on the screen with one hand while I hold it with the other. You will probably find the same. That said, when I peck at buttons on the screen, there is no wobble.Detach the screen and the Clipboard keeps working just as hard as the whole laptop was. Handwriting recognition means you won't need the on-screen keyboard, which is a bit of a shame as it is really slick in Windows 10. Palm rejection is flawless. Elsewhere, the pen means that Windows 10's lack of touch-friendliness won't be much of a problem. Even your desktop applications are easy enough to use with the pen.Is the Surface Book perfect? No, it has a few flaws but nothing anyone couldn't live with. The most annoying for me is that the SD card sits half-way out of the chassis, which is hardly a real problem. Most of the negatives you read in reviews are, I think, reviewers desperate to find fault. What the Surface Book offers is a unique experience that absolutely nothing else on the market can hold a candle to. It takes a no-compromise laptop and adds things to it that make it so much better than any old-fashioned laptop could ever be. You need to spend some time with one and I think it will convince you.