When comparing Programmer Dvorak vs qwpr, the Slant community recommends Programmer Dvorak for most people. In the question“What are the best keyboard layouts for programming?” Programmer Dvorak is ranked 4th while qwpr is ranked 11th.
Ranked in these QuestionsQuestion Ranking
Pro Easy to learn if you're already used to Dvorak
Pro Programmer punctuation without shifting on the top row
The top row is hardest to reach, and shifting doesn't make this easier. Programmers uses punctuation far more than numerals, so it makes sense to shift for the numerals instead of the punctuation.
Pro Better number arrangement
The smallest numerals are the most frequently used, so why should they be on the weak fingers of the left hand? The order still makes sense too. Odd numbers on the left, even numbers on the right, ascending from the inside out (with the least used numeral '9' in the middle).
Pro Made for programming
This keyboard took a stand and optimized the Dvorak standard for programming.
Pro Open source
The keyboard layout is open source and available for edition.
Pro Available for major operating systems
Easy to install on Windows, OS X and Linux.
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.
Con Requires adjustment period
Letters are moved, punctuation moved, and number in num lock are moved too.
Con Typing numbers is hard
Numbers are arranged for their characters, not in ascending order. You also have to shift.
Con Punctuation moved, not just letters
Punctuation moved in addition to letters, meaning that the learning curve is that much harder coming from QWERTY because nearly every key is in a different place.
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.