No, it's a heavy, non-portable tablet [...] and a bizarre, unintuitive OS.
Have you personally used one?
Disclaimer: I'm full-time Linux user of 8 years with a newer ultrabook and an Asus Transformer Prime tablet. I also have a friend who works at Microsoft and has a Surface Pro to show off.
I used one last weekend, and I was quite impressed. Granted, I'm not gonna buy one because of the price, battery life, etc. But the hardware feels solid; it's barely heavier than the Transformer tablet. The screen is as responsive as an iPad, and the OS feels very intuitive (Windows 8 was made for tablets, right?). I didn't realize at the time that it's as powerful as an ultrabook, but that makes it even more compelling. Rather than the optional keyboard, a dock with a proper keyboard would be awesome. Now if the OS was only POSIX-compatible...