My problem with such keyboard is that it assumes:<p>- you will mostly work on the same place (or you accept the burden of traveling with your keyboard and be "that guy" when you set it up. Personally for the same hurdle, I prefer a secondary screen on the go)<p>- you will mostly work on the same machine (or you have multiple keyboards, one for each machine, and if you are in a data center or tech support, you move with your keyboard).<p>- you will not be exposed to many different keyboards, or layouts (e.g: you don't need to go help users and customers on their machine that don't allow plugging in, you don't teach, you don't use your phone a lot, etc). Switching layouts all the time is a nightmare.<p>- you can afford the initial lower productivity (e.g: you are not a freelancer that needs a regular output).<p>- cables and taking space are ok. Taste is taste, after all.<p>- you have the money, and find it is better invested in this than say, a better screen, mouse, graphic card, battery, etc. And renewal. Or you have enough to have it all.<p>- you are certain of this model is what you need or you can afford trying many. There are many ergonomic keyboards. They are all special and expensive in their own way.<p>- your layout is available. I'm french, I use AZERTY. Or you are fine learning to type with the wrong letters, or using stickers. I often buy/user computers in/from the US, and just type from memory after setting the QWERTY to an AZERTY layout. One of my friend like Dvorak (actually Bepo, the fr version)...<p>- nobody else than you will use your computer. Or you have several setup and are ok to switch every time.<p>Now I understand that as it's my job, optimizing this key element of it makes sense.<p>But hell, that's a lot of per-requisites.