Qwerty certainly has momentum but I don't think the layout is inefficient at all. I have tried dvorak, but it is hard to compare if you can type on qerty blindl

Qwerty certainly has momentum but I don't think the layout is inefficient at all. I have tried dvorak, but it is hard to compare if you can type on qerty blindly. You would need to build the same proficiency to really compare it and that would take a lot of time. Personally I do think it is indeed the learning investment. You can use any classical layout without training, you will just be slower. No experience with any chorded keyboard and wonder how they would map all the keys. While they look cool, I would expect experienced users to perform better on a classical layout. A keyboard with only a numpad is quite common for some accountants. Maybe they would really like these devices.