Well, I really like the detailed reviews at notebookcheck.com and I'm fan of Surface Book as well. And it seems to be a problem for me ... as I've read about "Surface Book with missing pages", "can feel so barebones", "vital features missing" etc. As SB is quite expensive device, I did a deeper analysis and I was surprised with several missing issues or misunderstandings in this review as follows:
1. Incomplete Pro List:
+ PixelSense touchscreen display with Surface Pen (1024 levels)
+ RealSense infrared camera (Windows Hello login)
+ large 69 Wh battery
+ available Surface Dock (small, 2xDP, 4xUSB, Ethernet, Audio)
2. Some Irrelevant Cons:
no SmartCard/fingerprint reader (-> Windows Hello login), no HDMI (-> DisplayPort), no TrackPoint (-> Touch Display with Surface Pen), no RJ-45 (available Surface Dock), etc.
3. Controversial Battery Life Test (web 6:42)
Other reviewers reached almost double, e.g., arstechnica.com (web 12,5 h), engadget.com (video 11,5 h), mobiletechreview.com (mix 10h), so, the best results in their laptop list.
4. Controversial SB Evaluation (compared to Dell XPS 13-9350)
Many users compare 2-in-1 SB to ultrabook XPS 13, see link with detailed comparison at notebookcheck.com
http://www.notebookcheck.net/index.php?id=127065&specs[]=28123&specs[]=28216
4.1 Connectivity is almost identical (2xUSB, DisplayPort/Thunderbolt, Card Reader, Audio + more sensors for SB), but evaluation is completely different (SB-46% vs XPS-75%)
4.2 Display is much better in SB (higher resolution, cca 50% better brightness and color space, etc.), but evaluation is same (SB-88% vs XPS-88%)
4.3 Temperature is slightly higher for XPS, but evaluation is better for XPS (SB-90% vs XPS-97%)
4.4 Pointing Device - SB has almost all what's possible (keyboard, touchpad, touch screen, pen, three sensors, two cams), but evaluation is better for XPS with keyboard and touchpad (SB-86% vs XPS-94%). Note that XPS is in ultrabook category.
4.5 Battery - SB web test is controversial.
I understand different categories and reviewers, but still I'm not satisfied.
So, if you like Microsoft, then Surface Book can be a great "package", of course, quite expensive, mainly aimed to professionals and creators.