My experience was quite different to that described in this article. Around 20 years ago I switched to Dvorak on my personal computer. It took me about two week

My experience was quite different to that described in this article. Around 20 years ago I switched to Dvorak on my personal computer. It took me about two weeks to get used to it, and maybe four more to gather up to the speed I typed in QWERTY. Throughout this I still used QWERTY on other computers, like the family computer and computers at university. I had no trouble switching between layouts, and could type 60wpm in each, in consecutive minutes. I tested this when I had my computer in the family room connected to the family computer to transfer files (parallel cable!). I had one keyboard on the desk and the other on my lap and had no difficulty with the different layouts while working on both computers simultaneously. I never got much faster in Dvorak than QWERTY, but it was much better for my hands on the keyboards of the time.