Disclaimer: I'm writing this on a Surface 2 Pro (8GB/256GB)
I've been using a Surface 2 Pro since its launch day, and I didn't find this review good enough - it looks more like a "first impression" by someone used to something else.
I bought a Surface Pro exactly because I was looking for a small PC which could also work like a tablet, and run almost any Windows software. Is it thick? Yes, a bit - but beyond style, does it really matter if it is a little thicker? It's heavy? Yes, a bit, but still a reasonable weight. After all my Canon DOS 5D MKIII and its L lenses are big and heavy too. And powerful. And the camera and Surface plays well together, because I can connect the camera thanks to the USB port, and run both Canon software and Lightroom for on the field checks and first editing. And I have no problem to carry both in my Lowepro bag for the whole day.
They Touch Cover is not really the keyboard you're going to get if you need to type a lot. The Touch Cover 2 works well - I have no problem to type as fast as on a standard one, its backlighting is really useful, and it turns on as you move your hands over the keyboard. It's slim enough it doesn't add much to the thickness and weight. The touchpad could have been better, though, although it also supports gestures too.
The screen is very good, and thanks to Windows full support I can also color-balance it with standard tools. It is true the 16:9 format is not always the best one, and I would have preferred a more "squared" one. Applications should be designed to work well with this, as many Bing applications (news, sport, finance, weather, etc.) do.
Touch is very responsive, the on-screen keyboards never lags while writing. The Surface has not a "stylus" it has a pressure-sensitive digitizer, and it adds a lot in terms of usability. I can take hand notes as easily as I could do on paper.
What is missing is mobile connectivity - you can buy a mobile Wi-Fi hotspot or use your phone, but that's less practical. Microsoft should have added it in both models. The cameras have low resolutions, but they're enough for Skype calls or the like, and to get an image of a document or the like. After all, I'm using it to drive a full-frame DSLR often, thereby I really don't care about the built in cameras. After all taking photos with a tablet makes you really look a nerd.
SDXC support let you add a lot of storage for less critical files, and because the standard allows for 2TB cards, there is plenty of space for some time. High capacity cards are still expensive, though.
That author didn't understand how "Metro" apps work on Windows 8. Sliding from right brings in a standard menu where apps can add their own entries (and be part of the standard ones), usually settings/search/share ones, while system wide entries are also accessible in the lower pane (that's where PC settings are).
Sliding from left allows for switching to other applications. Sliding from top closes the current application, and sliding from the bottom brings in applications contextual commands.
It is also not true IE works in "vertical" and not "horizontal". Of course most sites are design for vertical scrolling, and horizontal swipes are meant for page back/forward actions. But click the "book" icon to the right of the URL, and IE will change the current page into a "reading layout" mode which works with horizontal scrolling.
Metro applications availability is a sore point - there are few (most are games), and only a handful are really useful. The built in applications are good enough to be used, but there is a lot of space for improvements. It's a pity MS made development with third party tools an issue, because coming late it would have been better to open it to as many as developers as possible.
I found very little issues using standard Windows application, mostly because the Arc mouse was not yet available in Italy, and the USB port is on the left side, making my old laptop mouse uncomfortable to use.
The small screen size coupled to the 1920x1080 resolution requires a decent sight, yet the screen is clear and very easy to read. No problem to use Word, Excel and PowerPoint while on the road, or connecting via SSH to perform some remote administration. Performing presentations via a network projector works very well, and with a Surface you can also move easily in the room.
I don't play games - but FSX, but I have a dedicated PC with all the needed hardware for it. The built in stand is good, and allows for easy use both on desk and on legs while travelling. I used it on trains, on planes, and waiting both, and typing was comfortable enough, although being heavy on the other side compared to a laptop requires to be a little more careful.
Sure Windows 8.1 still suffers from some "split brain" issues, and some settings are too scattered around, and you may need a little time to get at them quickly.
I find the Surface a surprisingly good device, and very good for what I need to do with a device like such. If Microsoft can improve the software quickly, it has a very interesting device. Not for everybody, sure, because of price and maybe weight, but a powerful one that can shine when what you need is exactly power and versatility.