When comparing qwpr vs Colemak Mod-DH, the Slant community recommends Colemak Mod-DH for most people. In the question“What are the best keyboard layouts for programming?” Colemak Mod-DH is ranked 3rd while qwpr is ranked 13th. The most important reason people chose Colemak Mod-DH is:
Some people find moving D and H to the bottom row much more comfortable (especially with flat keyboards). Curved keyboards like the Kinesis Advantage also help with lateral motion. Regular Colemak on these keyboards might be the ideal solution since then you help resolve some of the cons of regular Colemak without adding on the ones from Mod DH.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Good for vim users
Qwpr is pretty close to QWERTY, and even the HJKL keys are in the same left-to-right order (though on different rows). Alternatively, the AltGr plane also has arrow keys in a sensible position under the right hand.
Pro Common shortcuts don't move
A, Z, X, C, and V are in the same positions as QWERTY and Colemak.
Pro As easy as Dvorak
It's 32% easier than QWERTY by the Carpalx metric, which is slightly better than Dvorak's 30%. This is probably within Carpalx's margin of error though.
Pro Alternate plane with CapsLock key
CapsLock is pretty useless for most people, but qwpr layout uses it to shift to another plane with easy access to punctuation and arrow keys. This is especially useful for programmers.
Pro Minimal retraining from QWERTY
11 keys move, but except for P and E, they don't change fingers.
Pro Much less lateral hand movement compared with regular Colemak
Some people find moving D and H to the bottom row much more comfortable (especially with flat keyboards). Curved keyboards like the Kinesis Advantage also help with lateral motion. Regular Colemak on these keyboards might be the ideal solution since then you help resolve some of the cons of regular Colemak without adding on the ones from Mod DH.
Pro Easy to learn from Colemak
No keys change fingers from Colemak (with the possible exception of Z , which is rarely used, in one variant).
Pro 'HE' easier to type compared with regular Colemak
Pro Letter G goes back to its original QWERTY position
This puts ING all on the middle row. Regular Colemak has G in the top row.
Cons
Con Puts E on the pinky
'E' is the most used English letter by far, at almost 13%. That's almost as much as the spacebar. It needs to be on a strong finger. The pinky is the weakest finger and on the right side it is already overtaxed from Ctrl, Shift, and Enter.
Con P and E change fingers from QWERTY
Which makes it harder than necessary to learn from QWERTY. (And makes no sense. 'E' was arguably better in its QWERTY position on a strong finger.) This is due to using the flawed Carpalx effort model.
Con Regular Colemak is more standard
Mac and Linux have regular Colemak keyboard options. This isn't an issue if your keyboard is programmable through QMK, VIA, etc.
Con H, M, V, B change from original QWERTY position
Regular Colemak has these in their original QWERTY position. The learning curve increases somewhat in Mod-DH.
Con Breaks up ZXCV slightly
Breaks up ZXCV (moves V over one space). Could cause copy paste confusion if also using other layouts like QWERTY. For ANSI layouts the Z is also moved to a new position.
Con No Innate Layout Configuration In Keybr
Keybr supports Standard Colemak but in order to adjust to DH Mod you must use an extension like tampermonkey and run a Script like this one and adjust to fit whichever variant.
Con Index fingers jump rows more often
Con More optimized for ISO and ortholinear style keyboards, not ANSI
