The techPowerUP review team has published an evaluation of the Truly Ergonomic mechanical keyboard. Definitely a review you should read if you are looking for an ergonomic keyboard.
The Truly Ergonomic Keyboard is a very novel product in that it features the functionality of a ten keyless (TKL) keyboard in a form factor that is on par with some 60% keyboards. This allows for the use of a mouse closer to your body and thus helps combat repetitive strain injury or carpal tunnel syndrome, along with other muscle and joint pain issues. It does this with ergonomics and kinesiology accounted for, and there are a few more features we will get to soon.