This keyboard is actually pretty great. Do to a unrelated injury, I have wrist/hand issues when typing for long periods and this keyboard essentially solved them. Although, much of this can be attributed moving most of the pinky reaching to the thumb keys. If the price is to high or you don't like the layout, I strongly recommend using one of the many other keyboards that utilize a thumb cluster over pinky reaching. Sometimes you don't realize the pain your in until the pain is removed.
One thing I will say is the learning curve is no joke. I typically type about 100 words per minute with few mistakes but on first try I was at about 10 with an unacceptable amount of errors. After about 6 weeks I was up to about 80 and after a year I'm in the mid 90's consistently. However, do to the extensive programmability , I have switched my layout to colemak-dh and used a programming layer to keep Vim keys the same. Since the programming is in the keyboard it stills works when ssh tunneling into a server, which previously was a problem.