On the other side, nothing can emulate a good (even membrane) keyboard, because typing's most important sensory feedback is not touch or sound, but finger travel.
I'm a programmer and use a variety of keyboards. I have an 2014 MacBook Pro, a lowish end membrane keyboard at office and a Logitech G710+ with CherryMX Brown switches.
The winner is Cherry MX, hands down, but MacBook has a very nice tactile travel feel, so I can write way faster for a membrane keyboard.
The promise of butterfly keyboard was sharp tactile feed to enable faster writing speeds, but it proved to be too fragile as far as I can see. I've never used one for a long time, so I cannot comment on it with any authority.
When I bough the small Magic Keyboard 2 for use with my midi controller(I needed a bluetooth keyboard), it took me weeks to adjust. It felt like banging on a flat table for a while.
The problem is that I badly need a separate escape key(Vim user) and function keys. Switching the keyboard layout is just too much of a hassle.
The Vortex Tab 75 will fit my needs. Shame that it wasn't release months ago.
The RSI point is significantly more controversial. Practically any type of laptop keyboard or non-split desktop keyboard puts your arms and wrists at unnatural angles and encourages poor posture. I'm not going to argue that my non-split mechanical keyboard is any better for my health than a membrane keyboard, but mechanical keyboards give you enough customization that you can choose between hundreds of split designs or build your own to suit your specific tastes.
Besides, I've noticed that mechanical keyboard users rarely use the entire length of their switch travel; the entire point of tactile or clicky switches is to be able to actuate them without bottoming out. Typing on a MacBook keyboard (even the nicer scissor-switch kinds) feels almost like typing on a glass screen because you're forced to have each keystroke bottom out on the hard surface underneath.
I just don't find the idea that split keyboards are more "natural" to be true either. I've never felt a lack of comfort with the standard setup. Are there any well-done studies published on this?
Also after getting used to it, it was one of the most reliable and comfortable keyboards that I've ever used. However, I've eventually wore it down and its keys started to get heavier. So, I moved to G710+, and I'm very happy now.
First of all, the new switches are way too lighter than an old buckling spring or Cherry Blue equivalents. Also the ones I use (Cherry MX Brown) are way lighter than any moderately worn membrane keyboard.
The new keys are also more silent when compared to older buckling ones. If you want noise, you can use Cherry MX Blue. If you want absolute silence with no feedback whatsoever, you can use Cherry MX RED (and its friends). I personally prefer Cherry MX Brown, which is a good compromise between noise and feedback. My office friends are using Sun's old mechanical keyboards, and it doesn't bother any of us noise-wise.
Also, the mechanical keyboards give a much consistent feedback and their key weight doesn't change with age. I've used a Microsoft Ergonomic 4000 for ~10 years and its weight changes over the years.
Last but not least, nearly all of them are backlit. This is a huge plus for me.
I'm not after customization or anything in my devices (which is hugely useful for some), but its comfort benefits and consistency both reduced the fatigue and increased my writing speed and accuracy at the same time.
But I do understand we need good keyboards today.
Here is a small study that looked at it in kids: http://www.bradycline.com/2013/03/ipad-typing/
Another effect is the screen size. You can see the keyboard and text area in your vision on a phone or tablet, but it's not possible in a desktop or laptop.
Looks like it boils down to the information that we can gather about our fingers and hitting targets with the vision and other senses during writing.
Funny thing is, I can write faster while I'm listening to music and cannot hear the keys' sounds.
When I was a kid writers would discuss typewriters very similar to how we discuss keyboards. I haven't seen a typewriter in years. ;)
It's like the people who design these never used arrow or function keys. Did they think the gaps and positioning were arbitrary and useless?
'My keyboard broke' has never been a problem. I used the same laptop for just shy of 12 years. No keyboard problems. I'm typing on a 10+ year old keyboard right now. The only 'problem' is that some of the letters are partially worn away. Why not just use what works instead of inventing something new, probably more expensive, with new and different failure modes?
Innovation can lead to more accessibility, time savings, etc.
Is there a source for this?