I'll try to make this review sweet and quick. If you want a laptop that can do a little bit of everything, this is the device for you. The SB2 (specifically the 15 inch version with the GTX 1060), is a laptop that is a jack of all trades type of computer, but a master of none (if that makes sense). The display is fantastic (however not the greatest compared to the OLED displays that many laptops are being shipped with now). The CPU is great for everyday use and even for some heavy processing work such as video/photo editing, music production, and gaming (however not the most powerful).
The design is beautiful, and the tablet functionality is awesome to have as well (although if you opt for this 15 inch version, the tablet isn't as practical in its use unless you're doing a drawing session or watching a media while laying in bed or something along those lines). And the battery life is STELLAR (given the display). I'd say you can expect (assuming you're just doing average productivity work), at least 8-9 solid hours, and probably closer to 10 if you put the battery into battery saving mode. Essentially, as long as you're not doing anything too intensive, you can expect to make it through a full day without needing to worry about finding the nearest power socket. The device itself is beautiful as well. Don't be surprised if you go into a local coffee shop and have people looking at your SB2 or even asking what your laptop is.
Last thing I'll touch on is the gaming. Now, given that the 15 inch version comes with the GTX 1060 (which those unfamiliar is a mid-tier graphics card), you can expect to play any new AAA titles with no issues. For many demanding titles, you may not be able to play them at Ultra settings, but High and Medium settings will allow you to yield close to or even above 60 fps consistently. I would just recommend if you do plan on using this game, especially if you're planning to game for longer sessions (such as over 2 hours in one sitting) to undervolt the CPU. You can do this using ThrottleStop, but just make sure you do research before doing this as you could potentially damage the laptop. I personally have undervolted the CPU by around 100 mV, and so far it's been working great. This also lends itself to another advantage that this device has over your average gaming laptop. Because of the unique hinge design, the CPU and GPU are at separate parts of the computer, which allows the computer to not get as hot when gaming or doing intensive tasks that requires the GPU.
To sum this review up, if you want one device that can do it all, then the SB2 is the laptop just for you. It has an amazing design, unique tablet functionality, probably the most powerful GPU that you'll currently find in an ultrabook, and awesome battery life. The only con that I've come across is the price itself. I would recommend that if you are interested in purchasing this laptop to wait until a sale comes up. You'll at the very least be able to save around $300 for the laptop, so just wait a bit until you see a sale pop up.