For me the efficiency gains were not the point. The point was that changing to Dvorak massively decreased by RSI (although 20 years later I'm discovering that bodyweight strength training may have been even more effective).
Not readily having the preferred layout available is a non-issue. Either I'm using a keyboard for less than ten minutes, in which case I hunt-and-peck on QWERTY, or I'm using it for longer, in which case I switch to Dvorak using the OS keyboard settings. It's never been a problem on Windows or Linux. I don't think I've used a Mac during that period but I imagine it's equally easy.
As I recall the awkward learning period was between a week and a month. Twenty years later I've never regretted the time invested.
Not readily having the preferred layout available is a non-issue. Either I'm using a keyboard for less than ten minutes, in which case I hunt-and-peck on QWERTY, or I'm using it for longer, in which case I switch to Dvorak using the OS keyboard settings. It's never been a problem on Windows or Linux. I don't think I've used a Mac during that period but I imagine it's equally easy.
As I recall the awkward learning period was between a week and a month. Twenty years later I've never regretted the time invested.