I like this ergonomical keyboard much more than others I have seen. What I wonder is if its slight angles, in the horizontal and vertical layout actually help to improve the wrist and arms postions, over a conventional board. Maybe some of the GHers that have actual experience with ergonomical boards my add some ellaboration on its actual benefits.
I have 2 TECKs at home, one 109 and one 209. Both are programmed with the same layout, so the small differences in how both are labelled don't really matter. Up until last week, I was using one as my daily driver on my Windows box - the other is still connected to my Mac mini, which I use daily.
Personally, I love the columnular layout of the TECK. I find I am significantly more accurate at touchtyping than on a staggered keyboard, including the number row. I love the compact size, but it has a decent heft due to the steel plate in it. I've used it regularly, both on a desk and on my lap, and both positions work really well for me. I do wish there was some tenting, so I wouldn't need to rotate my wrists to be completely horizontal, but for the most part, it's a minor gripe compared to rest of the benefits.
Note, this was not my first ergonomic keyboard, so I was already used to the angled layout, and was used to hitting backspace with my left thumb, and hitting enter with my right thumb.
Here's
my current custom layout (Dvorak on the main, and Qwerty on the alt).