Earlier quoted context omitted.
I used Colemak (which is similar to Dvorak) and I would really recommend learning it if you don't already touch type. It does involve a little bit of pain at first and you'll feel really tempted to go back but in a week I was already fast enough to do useful work. I'm not a speed demon by any means, I type at the same speed I did before (60 wpm) except now I don't need to look at the keyboard which is very convenient…
Thanks a lot! I've searched a bit based on what you said and sort of found a point of entry into Colemak. It's very enticing. I'm not a touch typist yet (use all fingers but quite inconsistently I suppose, yet 'fast enough' for me and without looking). Would it be sensible to make such a 'dramatic' layout change at the same time as the switch to a split ortholinear such as the EZ? It seems more straightforward to do…
If you already type e.g. T with the wrong hand, then it's annoying to start typing it with the correct hand (because it's on the other side of the split), then learn a new location with a new layout.
(Do also consider Dvorak. The difference is not really worth an argument, but at least with a programmable mechanical keyboard one of the main advantages -- that Control Z/X/C/V remain in place -- can be kept with Dvorak with a small adjustment to the layout. I've never tried Colemak, but I do like the hand alternation design of Dvorak, and I think I would miss it.)